Science topics: Engineering
Science topic
Engineering - Science topic
This research group is created with an intention of making an interaction among the research scholars, professors, scientists, engineers & technologists working in the field of Engineering, so that today’s novel ideas can become reality of tomorrow and these all can be implemented in a more constructive manner for the welfare of whole mankind
Questions related to Engineering
My paper was accepted for a paper presentation under this conference:
International Conference on Law and Political Science(ICLPS)
Date: 18th - 19th November, 2019
Venue of Meeting Presentation: Embassy Suites Los Angeles- International Airport South
Address: 1440 East Imperial Avenue, El Segundo, CA 90245, United States of America
This conference was managed by International Institute of Engineers and RESEARCHERS (IIER) with website address
IS THIS A LEGITIMATE?
Finding the seismic pressure is an important parameter to quantify the damages on structures during large earthquakes. Since soil force equilibrium in wedge approach can be used in site conditions there are no finite methods for laboratory experiments to study the seismic earth pressure behavior. A simple demonstration in this research area would help many students to understand its basic concept with good insight.
Hi
I'm solving nonlinear second order equation by using finite difference method . finally for calculating value at any desired node, knowing three preceding nodes is required however by knowing boundary condition just one of these nodes becomes obvious and still knowing two other values is necessary. it must be noted there are plenty of guesses for values of these nodes which lead to compatible response.
Hello everyone!
I‘m currently a master student and studying Software Design and Engineering and looking for master thesis topics in the field of Microservices. I‘m not sure actually about the current topics for research in this domain and I need your help.
thanks!
USA lose trillions of treated drinking water annually (ASCE, 2017) and similar problems are highly observed in many urban water supply systems as well. In case of water distribution system there are several methodologies to find leakages such as using SONAR, sensors and UV rays. However, what would be the best alternative method in your suggestions to find the leakages quickly and effectively?
In a discussion, with an acquaintance, we found out that research is highest form of learning _
Important notes from the discussion are as follows :
Teaching :
- Manner in which a teacher (speaker) passes ( visual, textual, audio-Video, experimental demonstration etc.) on the information to the target audience.
Effective teaching is expressing the information based on the target audience, and not the teachers.
Training :
Manner in which a person is accustomed (trained) to given set of skills and it's practice (application) , does not matter, who is the individual.
Research :
Manner in which we teach ourselves the available information, train ourselves to identify the flaws in proper understanding of information, present the possible solution ( experimental, mathematical etc.) , based on our skillset.
Do you agree?
How can I import 2D sketches from CATIA into COMSOL Multiphysics?
The formats that COMSOL reads in 2D geometry are not available in CATIA.
I am looking for a lecturer job for engineering college in India. Since there are millions of websites available on Google, most of them look like false advertisements or outdated ones. Here is my question: can some one please suggest me which website is more genuine based on your experience for finding lecturer jobs in India?
To whom it may concern...
Case shown in pictures below need to stop in front of it...
What the mean of overload... What will be the meaning of calculated loading before design... and.... What really mean the structural design based on submitted data..
All, in general,.. knows that.. design start with converting functional use of the building to loading on structural element... then start design element by element ...
So, what might be the supposed loading to one story house... based on all adopted code... ? this is the first question..
Then what you think, .. or what the supervisor engineer might think the value of such loading on that slab shown in pictures attached... ? this is the second question...
Then at last... whom responsibility is that... if failure occur...? where that will be the most important question....
Limited education with low experiences causes such cases, ... or... we need to ask the supervised engineer if he care...
+1
Not a mechanical engineer, but my understanding is that:
- the damping coefficient is defined by damping force divided by velocity.
- the mechanical impedance is defined by force divided by velocity.
What am I missing?
Question-4: How mature are our computing platforms and programming languages for enabling autonomous software generation mostly at run-time?
Question-7: Are our mathematical means ready for rigorously expressing software system requirements? Is our computer’s inference power adequate for expressing real-time inexhaustive, indeterministic, and uncertain behaviors in SSE?
Hi everyone,
What do you think are the most important problems in computer science and computer engineering which if it will be solved would make a huge impact on technology?
what is it in your mind?
don't think that your idea might be stupid or not practical, just leave the message here, may be it help scientists and researchers to solve worlds problems and make our world a better place for everyone to live.
Best regards,
Yasin
I am chemical engineer working on the synthesis of two compounds (carbon compound along with polymer). What are the technologies/methods/ways on discovering or identifying the exact mixture that been synthesized?
Dears,
The following questionnaire is a part of my Ph.D. Thesis Degree in Civil Engineering and Construction from University of Bolton, UK.
You are kindly requested to reply to the following questions with a level of accuracy. Thanks a lot for your highly appreciated support. Furthermore, please share the questionnaire with your communities.
Sincerely Ashraf Ibrahim Nasr Elhendawi
Please Suggest any Unpaid Scopus indexed Journals for Fast track publication ( in 2 Months) for Computer Science and Engineering related areas
An intelligent planning of rooms based on Passive Solar design could effectively mitigate energy consumption and also promort the comfort. Anyways, what are the different methods used in the construction industry to implement passive solar design in rooms? Any scientific theories? Any case studies?
I would like to receive feedbacks from fellow researchers.
Weather forecast has utmost importance in Aviation, Ship routing, safety measures, planning and designing of structures, urban areas, offshore maintenance, natural resources, coastal areas, Agriculture, pollutants management and in many more weather applications in world wide.
As well known
In almost all papers the experimental section is so short and not detailed for instance no clear weights setup and so on
Where can we find expanded detailed narration of experiments and methods
The acceptable industry standards for water pressure is 140 kPa - 560 kPa. Domestic appliances operate under the intermediate pressure magnitudes. Topographic features and the increase of customer density cause deviations in water pressure throughout the supply system. In some cases, some water supply networks provide water in exaggerated high pressure to reach some customers in high altitude. This higher pressure accelerates the volume of water running out through unobserved leakages in supply system which results on microbursts of water pressure that may cause large scale failure and demands higher maintenance cost for water supply providers.
Dear researchers, what is your recommended solution to prevent these unnecessary pressure rise against transient scenarios?
I am finding difficulties while publishing one of my manuscript related to Maintenance Engineering. I worked very hard through out entire Year on this, and I believe that this manuscript will be very helpful and informative to any readers belong to Maintenance Engineering domain. I have submitted this in to renowned Journals but it's not been accepted. I have also updated the information as per reviewer's, However I am not satisfied with their comments.
What should I do? Please advise me.
There is nothing worse for curb appearance than chipped and cracked concrete, particularly in steps. But you don’t have to put up with that blight any longer. By the result of weather changes exerted on an existing construction for prolonged time, it causes contraction and expansion those gradually results concrete steps cracks and break up with time.
Dear researchers, I would like to get expert opinions on how to fix this issue with,
optimum efficiency
low cost
prolonged sustainability .
Your answers are highly welcomed.
Question-9: How may a nondeterministic intelligent programming language be created in order to enable run-time intelligent behavior generation for handling indeterministic events and autonomous decision-making requirements in SSE?
You only relate Architecture to Engineering or Computer. I work with Architectural History and Architectural Design and neither are contemplated in your "Disciplines" field. There is a great number of people working in these areas. If you don't have subjects like these, it's difficult to use your services as a place for grouping information.
Question-6: Are our programming languages sufficiently expressive for designing intelligent software? What would happen to a software system if an expected ‘if-then-else’ structures were indeterminable at design-time or exhausted at run-time?
Question-8: How may an intelligent software system be trusted and verified when its state space is infinitive in de facto, such as those of self-driving vehicles and mission-critical robots?
Question-2: Why have AI technologies been approached by data-driven neural networks rather than program-driven software engineering?
In recent years, there has been development of some innovative construction technologies that are changing the way we build. There are many new technologies that will have a significant impact on the future of the construction industry.
Today, construction companies are able to complete projects more quickly and efficiently than ever before. There are new technologies in demand for the future that will help with accuracy, sustainability and faster construction.
Based on your point of view, what are the types of construction that can be used in future?
Human dynasty in its millennium era. We have identified fire from the friction of stones and now we are interacting with Nano robots. Once it was a dream to fly but today all the Premier league, La liga and Serie A players travel in airplane at least twice in a week due to the unprecedented growth of human science. BUT ONE THING IS STILL ELUDING IN THE GLITTERING PROFILE OF HUMAN DYNASTY.
Although we have the gravitation theory, Maxwell's theory of electromagnetism, Max Planck's Quantum mechanics, Einstein's relativity theory and in most recently the Stephen Hawking's Big bang concepts...… Why can't we still revert back and forth into our life?
Any possibilities in future?
if not..
Why? in terms of mathematics, physics and theology??
Dear Shuraik Kader,
Given Albert Einstein's theory of relativity, cosmology regarding the development of the universe, quantum mechanics, future technologies for building interplanetary spacecraft, etc., time travel is theoretically possible. But in practice the building of a time machine by humans is impossible. Even if a man would achieve the required technological development in the next several hundred years, unfortunately he would not have enough time for it. First of all, a person must first solve other global problems, such as the necessary one is urgent, i.e. in the perspective of the next max. 2-3 decades of time, stopping or significantly slowing down the progressing global warming process, achieving zero-emission economy and avoiding a global climate catastrophe, which may occur at the end of the current 21st century. In order for man to be able to create new technologies of the future, to be able to build interplanetary manned spacecraft, etc., he must first save the planet's climate, biosphere and biodiversity from the risk of almost total degradation.
Best regards,
Dariusz
Thermal mass is a property of construction materials to absorb, store, and release heat energy. It is an important element of passive solar house design and can be utilized for passive solar heating, passive solar cooling, or both. I would like to know, what is the most effective technique to quantify these kinds of thermal masses in an existing construction?
Any Thesis idea for MS Project Management? .. I am now working as a structural engineer but I hope to shift to project control. what kind of thesis may be as an intro to my new career. NB I have graduated 1 year ago.
I just completing my undergraduate degree in engineering and I want to be an independent scientist without joining any organisation or institute. I want to know, how to do research work and be an independent scientist and
how to open own engineering research lab and earn money.
If your answer is no; yes it is by thermal energy
Picture attached shows the case of complete reinforcement of raft foundation, but after sand storm, as appear, more than 20mm layer form from sand under the reinforcement.... on your opinion, what might do to continue with work...?
Thank you to everyone who took the time to give an opinion on my PhD research. In this study, your professional advice is much appreciated. There are (5) FIVE parts in this questionnaire that need around 20-30 minutes of your time to complete.
Dear researchers,
I am working on Mg composites fabricated by powder metallurgy. I have investigated the wear behavior of Mg-based composites with variation in temperature. I observed that wear rate increased with an increase in the wear temperature. Can anyone explain me in detail, why is it happening? What is the mechanism? I am looking for your responses.
Thank you so much.
Structural failures that cause the loss of life are argued by some to be because the engineers in charge were not licensed professional engineers by their respective government agencies.
Q1 of 2: What do you believe might reduce/eliminate the collapse of engineered structures?
Q2 of 2: Regardless of a professional engineers' license and a university engineering degree(s), what might be the "Root Cause" for such horrific failures?
Stay Healthy!
Cheers,
Bill
Q. : Students asked me that "we only study about different forms of energy, one form of energy getting converted to another forms of energy. But no one knows what is energy."
Ans: No answer
Q. Sir Why do we have to call something by the name that a scientists used long back, can't we change it.
Ans: Science or engineering is field of perspective, how one looks at something matters. But everything that you read in a book can be changed. If you wish you can express it in a different manner.
It is the terminology, that we learn, in which people who observed certain phenomenon used to explain a particular concept we follow. Learn. To make world understand what you have to say you have to first make them ready to understand. Otherwise no one would know.
Dear Colleagues,
Please, I need the doc template for Alexandria Engineering Journal.
I require it directly to download.
I appreciate any help you can provide.
I have a simulation code for a Horizontal Washing Machine.
The code solves the equations of motions of the system by Matlab ode45 and plots the vibration response of the system at the transient state of performance.
In this code, the frequency (omega) is an exponential function of time, as it's stated below (and its diagram is attached to 'the question'):
-------------------------------------------------------------------------------------------------------------------------------------------------------
omega= (1-exp((-0.5)*t))*omega_0+(1-exp((-0.5)*heaviside(t-t1).*(t-t1)))*(omega_1-omega_0);
-------------------------------------------------------------------------------------------------------------------------------------------------------
ode command:
-----------------------------------------------------------------------------
[T,Y]=ode45(@snowa1,tspan1,initial_vector1);
plot(T,Y(:,1)-mean(Y(:,1)))
-----------------------------------------------------------------------------
The resulting displacement response is attached to the question.
It is desired to :
First, increase the frequency to omega_0 by exponential1
Then, increase it to omega_1 by exponential2
But 'the problem' is that:
the displacement response shows an unexpected increase in frequency at the beginning of the second exponential increase (it becomes 20 Hz, which is much larger than the maximum frequency in the simulation- 10 Hz).
Do you know what could be the reason for this response?
Any help would be gratefully appreciated.
I understand that the 4DOF system for the washer can be quite lengthy. However, I'm unsure if your question is a control problem. If it is, and the 4DOF mathematical model can be expressed in such form:
x' = f(x) + g(x)·Fc(ω)
where
- f(x) = [f1(x), f2(x), f3(x), f4(x)]T and g(x) are the nonlinear terms in column vector forms that you derived from the Lagrangian method,
- Fc(ω) is the control force that represents a function of ω in vector form, and
- ω (omega) is the control input,
then I think it is possible to design the spin speed profile for the control input, ω, so that the desired responses of x can be achieved. If you want to design the profile, you need to at least understand the mathematical equation for Fc(ω). Do you want to regulate the spin speed at 300 rpm, 600 rpm, or 1200 rpm? Because I see only the signal oscillates within the dimensionless amplitudes ± 4×10–3.
I have plotted the signal according to your suggestion, and compared it with Mahdi's original signal. Note that if t1 > 5/τ, then exp(–τ·θ(t – t1)·t) ≈ 0 after t1, because exp(–0.5·t) has decayed to almost zero.
Greetings
It is very difficult for me to choose between these two majors for the master's degree
Although I think this is a question for many other students as well
Regardless of interest, which of these two disciplines do you think has a better future? Which has more job markets, in the US and Europe? Which one is more suitable for studying abroad? And which one has more income? Are jobs related to organic chemistry less than analytical chemistry?
Please share with me if you have information about these two fields and their job market.
Thanks
Data science is a growing field of technology in present context. There have been notable applications of data science in electronic engineering, nanotechnology, mechanical engineering and artificial intelligence. What kind of future scopes available for data science at civil engineering aspects in the field of structural analysis, structural design, geotechnical engineering, hydrological engineering, environmental engineering and sustainable engineering?
Yesterday I have read a news stating that The embryo fossil, nicknamed “Baby Yingliang,” was discovered in Ganzhou, Jiangxi Province in southern China, and is believed to be at least 66 million years old. Researcher Dr. Fion Waisum Ma told the AFP news agency that the discovery is “the best dinosaur embryo ever found in history” (globalnews, 2021).
Although there were several discoveries of Dinosaur components such as:
Eggs
DNAs from thier remains
are frequently being discovered, Since the biotechnology development is in its Zenith at 2022, Why nobody has attempted to create a dinosaur?
What type of scientific constraints would be encountered in such a laboratory experiment?
Complex graphical sketches are highly involved in Culmann's methods. Therefore, it is highly prone for getting deviations in magnitudes for resultant pressure on retaining wall. I would like to get suggestions from RG colleagues on why Culmann's graphical approach is mostly preferred in many research papers albeit Rankine's method is easy and precise in terms of equations and substitutions. I would welcome answers from both theoretical and practical perspectives.
Dear Research colleagues,
I have got some replies for my applications for postgraduate doctoral studies. While I analyze the replies, I have found the following issues:
1. Some replies are from good universities but the supervisors have less publications in my field of research.
2. Some replies are from universities with QS ranking below 1000 but the supervisors are with highly decorated profile with many editor positions and also with 150+ published peer review articles.
So which option do I need to chose to become a very good doctorate academic?
Dear colleagues,
I would like to request your collaboration to take part in the survey, available at the links:
(EN): https://lnkd.in/djVdWne
(IT): https://lnkd.in/dnvK3eJ
(PT-BR): https://lnkd.in/dVGWmHv
This questionnaire is part of the project aiming to analyze the transition from a linear economy to a circular economy, comparing developed and developing countries, at a macro level (nations, regions, cities).
The project is a partnership between the University of Brasilia (Brazil), coordinated by Professor Patricia Guarnieri and the University of Bologna (Italy), coordinated by Professor Augusto Bianchini.
Your participation is very important to us. Please share with your network!
Sincerely,
Patricia Guarnieri, Dr.
Professor and Researcher
Faculty of Economics, Business Administration, Accounting and Public Policies Management (FACE/UnB) - http://www.adm.unb.br/
University of Brasilia - UnB - http://www.unb.br/
ORCID : http://orcid.org/0000-0001-5298-5348
CO2 is used as raw material for chemical syntheses. It paves the opportunity to mitigate the greenhouse gas (GHG) emissions. However, it is not mathematically or logically proved yet that carbon capture benefits the environment in terms of resource efficiency. In my opinion, I believe that the life cycle assesment (LCA) would be the most suitable tool to quantify the resource-based benefits due to carbon based methane (CH4) production and to prove the resource efficacy of carbon capture.
I would like the researchers who read this discussion to provide their own ideas on whether LCA is the most suitable tool to identify the carbon capture resource efficacy or are there any methods better than LCA that can be applied on CO2 based methane production.
Hello RG members,
Our team is engaged in preparing a comprehensive LCA tool that is freely available for any kind of users to facilitate the global warming potential calculation due to the building structures, pavement structures and hydraulic structures. In reference to this objective, I would like to get opinions from you on what type defects/failures/issues that you encounter with present life cycle assesment softwares such as Oneclick LCA, SimaPro and OpenLCA etc.
Your answers would help our team to develop a well structured LCA tool. Thank you
I am searching on standard books on secondary WW treatment options such as oxidation ditch and maturation ponds. I would like to know which books do you recommend for students.
Do we need to be specific?
Sometime I feel that if we become specific with more details when we ask the questions, we loose some potential researchers from other fields. So the number of answers reduce, then it is difficult to get attention of other researchers. So at the end we do not get many answers.
What is your experience and opinion on this? Please share your thoughts as well.
When running AVL, the program outputs derivative values, however I have not been able to find documentation on whether the derivatives are dimensional, or dimensionless based on the *.AVL input file.
Hi for everyone,
I would like to do a Life Cycle Assessment comparison for teak timbers from various geographical locations. Could you please share with me any data that you have for carbon footprint on timber with their corresponding information?
I have prepared 6 manuscripts related to green roof substrates, 4 of them consist of experimental studies and 2 literature reviews. I have previously submitted some articles for 8 journals. But unfortunately I am continuously getting rejected due to "inappropriate content" for the corresponding journal. Meanwhile, some of the journals have facilitated me article transfer options and still I am getting rejected by those transferred journals with same reason of "inappropriate". I don't want to let my works in vain. Can anybody suggest me some suitable journals with high acceptance rate and have subscription options for publications?
It would be a tremendous help.
Hi
Do you know a journal or conference for publishing Book review in computer engineering ?
can you suggest me one?
thanks in advance
Excess of fluoride content in drinking water (more than 1.5mg/L) sourced from inland water bodies causes dental fluorosis and skeletal fluorosis. Although reverse osmosis (RO), electrodialysis, and distillation are available for deflouridating inland water bodies. However am not sure that how effective these methods can be used to deflouridate groundwater. I would like to hear some suggestions on the mechanisms effective at deflouridation of groundwater.
Jerk is defined as the rate of change in acceleration. But I would like to know some practical applications of Jerk inorder to have better understanding. I kindly request to suggest me some examples.
Hi, I hope you all will be fine. I need the suggestions for the Dissertation Topic of my MSc Electrical Power and Control Engineering. Your cooperation will be highly appreciated.
I am Interested in Solar PV technologies.
Thank you
Looking for power and control Engineering related answer
I agree with the comments on the question being too generic. However, I have attempted to answer this question anyway (with some caveats) with the attached decision tree. This is an excerpt from my book; the PDF is available for free here:
Which preprint server would you recommend for engineering and materials science field?
Hi everyone, Im looking for a word template for preparing a publication on the Journal of Building Engineering . Any help on this here?
What options available for Engineering students to get better Industrial exposure in India
Hi,
I am currently working on my PhD in Control Engineering. I have run into a brick wall and it has consumed months of my time. I understand the following:
There are 4 types of configurations for a power converter:
Grid Forming
Grid Supporting Current
Grid Supporting Voltage
Grid Feeding
I am using the following paper to try and establish a microgrid of parallel converter:
1. When I establish a Grid Forming power converter, I set the w and v of the grid. I am then using a second Grid Supporting Current power converter, but the voltage of the grid become unstable. I have read in other threads that Grid Forming power converters cannot run in parallel with any other converters. I assume this is why this started.
2. I then try to establish 2 Grid Supporting Current power converters to run in parallel with each other. However, there doesn't really seem to be a way that I can synchronise them. I can get them to run when the power on the droop controller is the same, therefore the w are both the same and they synchronise. I tried to switch one of them for a Grid Feeding power converter, again this did the same as in part 1, it adjusted the voltage and it became unstable.
3. All of the models I have come across take the inner current loop voltage readers before the Capacitor but after the Inductor, as in the paper mentioned above. However, Simulink gives me an error about zero crossings, when I override it the AC output has major distortion in it.
How can I create a Simulink model with two parallel converters to run together ?
My goal is to create two or more parallel converters providing a single load so that I can create a controller that provides stability under actuator attacks.
The other papers I have based this off are:
You can see from these articles that the current reading is taken before the capacitor bank.
Dear colleagues, have you faced rejection from Alexandria Engineering Journal without any reason?
Want to understand the options available for Engineering students to enhance their Industrial exposure while studying.
Industry 4.0 - An excellent topic .
Peer-reviewed (refereed or scholarly) journals - Articles are authored by specialists and vetted by numerous other experts in the subject before being published in the journal to assure the quality of the article. (The paper has a better chance of being scientifically sound, reaching reasonable findings, and so on.)
Because they have gone through the most rigorous review process, articles from scientific, peer-reviewed, academic, and refereed publications are more reputable than those from popular or trade journals ('magazines'). They also have the highest number of references or citations.
Hello,
I am Yvon françois TSOLEFACK engineer in electrical and energy engineering of Cameroonian nationality, and promoter of a positive energy road project for Africa, and more particularly in Burkina Faso (pilot country for the experimentation of the project), project which has earned me to won a few brawls and rewards at the end of certain national and international challenges and innovation competitions in energy.
I had to consult (carry out a bibliographic review) several works already carried out in the field, via certain open research thesis platforms, which were very interesting. A great thank to all researchers amongs all of you in the field who kindly accept to share their work with me.
However, I would also like to do a thesis in co-supervision between the doctoral school of the 2iE institute in Ouagadougou in Burkina Faso, and a suitable school / university which has the expertise in the experimentation of positive energy road technologies.
My project (my desired theme) consists of designing a thermo-piezoelectric block capable of simultaneously exploiting the mechanical stresses of road traffic, and the heat stored by the roadways, to produce electricity.
It will therefore be a question of carrying out modeling and simulation work in order to determine the optimal structure of the block according to road traffic, vehicle weight, sunshine (temperature profile, humidity, etc.), depending on the context, etc.
In short, I would like to have advice from you (the researchers community) regarding the best adapted and advanced doctoral school laboratories in these positive energy road technologies, through which I could carry out my research, in collaboration with the doctoral school of the 2iE institute in Ouagadougou.
While waiting for a favorable result from you, please receive my sincere admirations and considerations.
Best regards,
Yvon François TSOLEFACK
Electrical and energy engineer
Tel: +226 62 64 77 10(Whatsapp)
Hello
With you, engineer/ Ahmed Mohamed El-Sayed
Teaching assistant at the Department of Construction and Building Engineering - Faculty of the Arab Academy for Science, Technology and Maritime Transport, South Valley Branch in Aswan
Attached to you is a survey related to the research point and the factors affecting the partnership between the public and private sectors. The survey time will not exceed ten minutes.
Thanks for your time
Hello, Im currently in an Engineering module of Fluid Mechanics, and I was hoping if anyone could assist me in the process with these 2 questions while my Professor is absent. I feel my process is correct, but i keep getting answers only close to what the real answer is. I wont be reanswering these questions, so anyone who can properly get through it and arrive at the answer would be appreciated
Q1
'A fluid of density 807 kg/m3 flows through a sudden contraction into to a pipe of diameter 17 mm, with final mean velocity 2.4 m/s.
If the total pressure loss is 401 Pa, calculate the diameter of the vena contracta, in mm to 1 decimal place'
Answer: 14.3 ± 0.05
Q2
'Two sealed tanks, whose total pressures differ by 3,764 Pa, a are connected by a pipe of length 82 m and diameter 22.8 cm. A fluid of density 897 kg/m3 flows through from one tank to the other at a steady rate. Calculate the mass flow rate in SI units, to 3 s.f., when
- the contraction loss coefficient is 0.5 at the entry to the pipe
- the friction factor for the pipe = 0.05(1+(20x10^3 / d)
- the downstream tank can be assumed to be infinte.
Answer: 23.1 ± 0.05 (kg/s)
Thank you
In the past two decades, many robust structural reliability methods have been presented that we may not even have heard their name. For a reliability researcher, it is very difficult to read all manuscripts, write their code and properly examine their efficiency/accuracy. On the other hand, it seems that some efficient/robust ones are being forgotten.
The purpose of this discussion is to create a space for the exchange of experience and expression of reliability researchers' views/opinions about the structural reliability methods. I hope this could help us to save time and learn more.
Suppose that you have a real-world structural reliability problem without any information about its limit state function, geometry of the performance function and the safety level of the problem (i.e. the performance function can be estimated by a finite element method-based software).
Among the existing reliability methods, which one is your choice? Why?
Let us discuss about this. Share your experiences to help others.
'A hospital ventilator is fed by an oxygen supply at 177 g/s mixed with ambient air, density 1.295 kg/m3, at a rate of 0.69 m3/s. The gas mixture is humidified by the addition of 0.161 kg/s of water. Calculate the total mass flow of fluid supplied by the ventilator in kg/s, to 3 d.p.'
Hello, I am a First Year at my University taking Engineering, and need some help understanding this question.
The answer to it is 1.232kg/s
Thank you to anyone who can help!
