Rezvan AlamianRheinland-Pfälzische Technische Universität Kaiserslautern-Landau | TUK
Rezvan Alamian
PhD of Mechanical Engineering
About
39
Publications
10,294
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707
Citations
Introduction
Education
July 2015 - April 2016
September 2012 - May 2017
September 2008 - January 2011
Publications
Publications (39)
Sea wave characteristics could be the most crucial sloshing occurrence caused by OWCs. In this paper, an OWC with different inlet geometries has been investigated experimentally to optimize the performance and reduce sloshing. Eight wave gauges (WG) are applied to measure water free surface to determine the sloshing. The results showed that the con...
Renewable energy development could be an appropriate method to tackle the problems caused by fossil fuels. In this regard, an Oscillating Water Column (OWC) with a scale of 1:10 has been studied in this research. Sloshing is an unwanted phenomenon in OWC. Therefore in order to study sloshing, A Novel experimental approach for measuring free surface...
The characteristics of incident waves, draft depth, and orifice diameter significantly affects the performance of the OWC. This paper evaluated the hydrodynamic response of an OWC with nonlinear PTO imposed on the Caspian Sea wave conditions experimentally. Experimental tests have been done in two stages; first, considering the incident wave freque...
In this paper, the effect of installation depth optimization on the performance of an OWC has been studied experimentally. The converter's efficiency was considered as an objective function, and draft depth was optimized; the dimensionless coefficients, including pressure, damping, and transmitted wave, were defined to describe the hydrodynamic beh...
Floating production storage and offloading (FPSO) platforms are among the most important platforms in the offshore oil and gas industry. These platforms are generally anchored to the seabed through mooring lines. Usually, the FPSO and the oil tanker are nearby before starting the offloading operation. In this research, the hydrodynamic interactions...
In this paper, we present a study of an underwater glider with a cylindrical body, a conical end shape and a spherical nose with NACA0009 airfoil wings. In the experimental section, we investigate the hydrodynamic coefficients of drag and lift as well as the torque on the glider then analyze the launch velocity, launch angles, angular velocity, and...
Sea wave conditions have a significant effect on the hydrodynamic behavior of oscillating water columns (OWC). The interactions of the converter and the input waves are crucial in determining and evaluating the non-dimensional hydrodynamic coefficients. Therefore, considering the importance of these coefficients in evaluating the performance of OWC...
In the past decade, ocean and marine waves like other renewable energy sources attracted attention due to its high energy density. The most important part of a wave energy converter (WEC) is power takeoff (PTO) system. In this study, a proper hydraulic power takeoff system for centipede WECs has been evaluated and analyzed in experimental scale. Ex...
In this paper, the effect of the draft depth (as a dimensionless number) and characteristics of the incident wave on free surface oscillation, velocity, and the output power of an OWC has been analytically and experimentally investigated. Therefore, the governing equations of hydrodynamic performance inside the oscillating water column chamber were...
This work presents a numerical Simulation of an underwater glider to investigate the effect of angle of attack on the hydrodynamic coefficients such as lift, drag, and torque. Due to the vital role of these coefficients in designing the controllers of a glider, and to obtain an accurate result, this simulation has been carried on at a range of oper...
In this article, selecting an appropriate mooring system for the spar platform of a wind turbine consisting of chain–cable–chain is investigated based on a meta-heuristic method. A boundary element software is applied to hydrodynamics analysis, and the numerical results are verified by experimental results. According to the characteristics of the e...
The increasing need for fossil fuels along with their limited resources and also environmental concerns caused by pollution from internal combustion engines have always led researchers to improve the technology. The use of homogeneous compression ignition combustion technology as well as alternative fuel sources such as biodiesel is proposed as a n...
In the present research, the performance of a prototype tidal turbine is evaluated via towing tank tests. The examined model is a three-bladed horizontal axis with a 1.15 m diameter. Previously, we studied the hydrodynamic behavior of this turbine and calculated the hydrodynamic coefficients using a numerical approach. Thus, this work concentrates...
Ocean wave is one of the renewable energy resources that these days various devices are used to extract its energy. Oscillating Water Column (OWC) installed on the shore is one of the wave energy absorption systems which has received attention due to its simple structure. Investigation of the pneumatic power is of great importance in such systems a...
Purpose
The purpose of this paper is to design, investigate and optimize a horizontal axis tidal turbine (HATT) using computer-aided numerical simulation and computational fluid dynamics (CFD). This is the first step of research and development (R&D) for implementation in the Persian Gulf condition. To do so, suitable locations are reviewed. Then,...
Utilizing the energy of sea waves can be a great solution to reduce fossil fuel consumption and its side effects. Therefore, in this research, the construction and operation of a multi-chamber oscillating water column were evaluated technically and economically. In order to build a power plant, 12 points have been selected on the Caspian Sea. The o...
Energy consumption growth in the world is one of the primary concerns of researchers in the energy fields. Providing demanded power, especially in peak consumption times besides less emission production, is always been the goal of power plants designers. Utilizing auxiliary devices or cycles such as compressed air energy system or organic Rankine c...
In the present work, a transient numerical study on two-phase flow over circular staggered and inline micro pin fins is conducted. Pin diameter, fluid density ratio, and surface tension have been taken into account. Diameters of micro pins are in the range of 50 to ; moreover, a variation of 100 fold in the surface tension and density ratio are con...
Subcooled flow boiling is one of the major issues in the nuclear and power generation industries. If the fluid inlet temperature in the boiling area is less than the boiling temperature, the boiling process is called subcooled boiling. The symmetry of a physical system is a constant property of the system and is fixed by deformation. Using magnetoh...
The fuel cell is an electrochemical energy converter that directly converts the chemical energy of the fuel into electrical current and heat. The fuel cell has been able to identify itself as a source of clean energy over the past few decades. In order to achieve the durability and stability of fuel cells, many parameters should be considered and e...
The marine and ocean energies are part of renewable energy that Wave energy converters (WECs) are used to extract them. Experimental modeling will be useful in evaluating their performance. In this research, the experimental model of an attenuator WEC is built in the Sea-Based Energy Research Group of the Babol Noshirooni University of Technology,...
Exploiting wind energy, which is a complex process in urban areas, requires turbines suitable for unfavorable weather conditions, in order to trap the wind from different directions; Savonius turbines are suitable for these conditions. In this paper, the effect of overlap ratios and the position of blades on a vertical axis wind turbine is comprehe...
![Figure 6. Calculation of the metacenter M of the floating body [32].](publication/332998506/figure/fig4/AS:757060673212416@1557508738944/Calculation-of-the-metacenter-M-of-the-floating-body-32_Q320.jpg)
In this paper, a pitch point absorber wave energy converter (WEC) is selected in order to be optimized for the wave characteristics of the Caspian Sea. The optimization process is a multi-objective optimization. For achieving the optimal WEC, mean absorbed power should be maximized while the construction cost should be minimized. The submerged surf...
Due to the distance of remote coastal areas and multiple islands in the south of Iran from the national grid, establishing wave power plants is highly beneficial. Therefore, in this study, the wave energy potential at these regions is investigated. For this purpose, wave characteristics are provided using European Centre for Medium-Range Weather For...
Wind energy is one of the most important sources of renewable energy for electricity generation, which has been paying considerable attention over the past years.
Due to the high cost of designing and manufacturing floating wind turbines, calculations are important for analyzing and evaluating their functional characteristics. For this purpose, va...
In recent years limitations of non-renewable resources, high production cost and also adverse pollution effects on the environment led us to renewable energies. One of the most important renewable energy resources are sea-based energies and water currents. So far different approaches are studied in order to use the sea-based energies. One of these...
In this paper, the effects of sea depth on the performance of a modified point absorber wave energy converter (WEC) are examined using an experimental study. For experimental evaluation of WEC, the general cubic shape is used. For obtaining the final shape of this novel WEC, 3 stages are considered including, still water depth optimization, optimiz...
In this paper, the effects of sea depth, wave energy converter’s (WEC’s) draft and position of centre of gravity on the performance of a point absorber WEC are examined using an experimental study. By considering the general cubic shape for the WEC, the tests are implemented in the experimental wave tank. In this context, by creating waves with dif...
This paper describes the innovative offshore point-absorber wave energy converter (WEC), IRWEC1, under development by the Hydrodynamics, Acoustics and Marine propulsion Group at Babol Noshirvani University of Technology. Totally enclosed in an outer shell, with no external moving parts, IRWEC1 is completely sealed which make it a robust and trustab...
The everyday growing populations all over the world and the necessity of increase in consumption of fossil energies have made the human to discover new energy resources, which are clean, cheap and renewable. Wind energy is one of the renewable energy resources. Considerable wind speed has made settling of wind turbines at sea beneficial and appeali...
Simulation of linear and non-linear waves in numerical wave tank has been one of the most important topics of interest to researchers and scholars working in the areas of the marine industries. In this paper, due to capabilities of the boundary element method,
nonlinear waves generated by a piston type wave-maker in a 2D wave tank was investigated...
Increasing world population and consequent increase in fossil fuel consumption emerge the necessity of looking for new sources of energy, resources that are clean, cheap, and renewable. The extracted energy from the sea is one of the alternatives of fossil fuels. This energy is available either in the form of tidal or wave energy. Wave energy conve...
Ocean is one of the renewable sources of energy that can supply part of the world's energy needs and thus reduce the rate of consumption of fossil fuels and other non-renewable resources. The wave energy can be converted to electricity or other forms of usable energy. Water waves have a relatively high power density with a total global power of app...
A transient flow simulation for gas pipelines and networks is proposed. The proposed transient flow simulation is based on the state space equations. These equations are derived by the transfer function equations. However, the transfer function model cannot be used for a complicated network. One can easily apply a state space model for a large and...
There have been widespread applications of fluidized beds in industries which are related to the combination of gas-solid particles during the last decade. For instance, in order to crack the catalyses in petrochemical industries or as a drier in food industries. High capacity of fluidized bed in heat and mass transfer has made this device very pop...
A transient flow simulation for gas pipelines and networks is proposed. The proposed transient flow simulation is based on the state space equations. The equivalent transfer functions of the nonlinear governing equations are derived for different boundary conditions types. Next, the state space equations are derived from the transfer functions. To...
Questions
Question (1)
Dear all,
I have a question regarding imposing a boundary condition in ANSYS (Transient Structural).
The problem is a slamming of a composite plate in water (FSI problem). The geometry of the problem is shown in below. The initial velocity of the plate is 10 m/s in the negative direction of the vertical axis. Here, I want to impose a boundary condition for the three orange edges shown in below picture. This boundary conditions should be applied in a way that these edges moves with body but not deflected because of the slamming pressure applied by the water. It means that these edges are actually the fixture frames which carry the plates. On these edges of the fixture-frame, the plate is simply supported without in-plane fixation.
My problem is that I do not know that how I can exert this boundary condition in ANSYS (Transient Structural).
