Mohammad Reza Safaei

The present study was numerically inquired the heat transfer performance and fluid flow characteristic of a helical micro double-tube heat exchanger (HMDTHX) using the finite volume method. The tube length was considered to be constantly equal to 30 mm, and 12 different configurations were modeled by changing in turn number and pitch length (P) for...

In this study, thermal performance and flow characteristics of a shell and tube heat exchanger equipped with various baffle angles were studied. The heat exchanger was operated with distilled water, and a hybrid nanofluid at three concentrations of 0.04% and 0.10% of GNP-Ag/water within Reynolds numbers ranged between 10,000 and 20,000. The thermop...

Environmental concerns have urged a search for eco-friendly refrigerants in the refrigeration industry to overcome ozone depletion and global warming problems. Therefore, current research emphasizes frictional pressure drop during flow boiling of environment-friendly refrigerants (GWP<150), isobutane, HFC-152a, HFO-1234yf were tested against common...

This study investigates the effects of melting phenomena and non-linear thermal radiation in Cross nanofluid bioconvection flow with motile microorganisms with a convective boundary over a cylinder. Brownian motion and thermophoresis diffusion are also taken into account in this mathematical model. A governing partial differential equation is used...

Nowadays, due to the energy and environmental crisis, using renewable energy is considered to reduce environmental pollution. In this paper, a comprehensive review of geothermal source heat pumps (GSHPs) and air source heat pumps (ASHPs) are studied from various aspects including refrigerant change, single-stage heat pump and heat pump with an econ...

Most of the energy consumed worldwide is wasted as heat. The usage of this waste heat both increases the efficiency of the system and reduces environmental pollution. The Organic Rankine Cycle (ORC) has been recognized as a dependable technology for turning low-temperature heat sources into electricity, and it is also a promising solution for recov...

Background: In this modeling project, employing various machine learning methods, the thermophysical properties of phase change material (PCM) containing three nanoparticles were predicted. PCM with Multi-Walled Carbon Nanotube (MWCNT), Graphene Nanoplatelets (GNP), and nano-graphite (NG) were considered as nano-enhanced PCM, and their experimental...

Latent heat thermal energy storage (LHTES) systems are attractive for bridging the energy supply and demand gap. In such systems, reducing storage time is critical, especially for solar applications. Accordingly, this study mainly aims to employ various nano-additives, including metal (Ag and Cu) and metal-oxide (Al2O3, CuO, and TiO2) nanoparticles...

CONFLICT; MEDIA AND COMMUNICATION

This article is considering the continuous development of heat pump and refrigeration systems. The sub-cooler and flash tank have been described as effective methods to improve efficiency in the mentioned systems. Also, the intermediate pressure optimization in each of these methods has a significant impact on their efficiency. Therefore, it is imp...

The bioconvection nanofluid flow study is one of the most popular topics since it has a wide variety of physical significance in biofuels, bioengineering, and medicinal research. The current study aims to investigate the features of two-dimensional UCM fluid (upper-convected Maxwell nanofluid) flow with Cattaneo-Christov heat and mass flux, motile...

The forthright aspiration of this communication is to scrutinize the attributes of forced convection from flat heated surfaces subjected to external flow, portrayed by the freely developing boundary layers enveloped by a region that comprises no velocity and temperature gradients. The flow is triggered by the stretching of a plate at a non-linear r...

https://www.mdpi.com/topics/Biomechanics_Biomaterial_Neurological

The high flammability of hydrogen gas gives it a steady flow without throttling in engines while operating. Such engines also include different induction/injection methods. Hydrogen fuels are encouraging fuel for applications of diesel engines in dual fuel mode operation. Engines operating with dual fuel can replace pilot injection of liquid fuel w...

This paper highlights the applications of nanotechnology that are used in internal combustion engines in terms of nanoflu-ids. Nanofluids are prepared by dispersing or blending nano-sized particles in a base fluid (viz., H 2 O, lubricant oil, glycol, biodiesel, diesel, etc.) to achieve desirable attributes in a specific field. The addition of nanop...

The use of nanopowders in the base fluids dramatically impacts the performance of cooling and heating systems. Nanoparticles enhance thermal conductivity by altering the thermal properties of the base fluid. The purpose of this paper is to numerically evaluate the glass cooling of a double-slope solar still using a hybrid nanofluid (Al2O3-TiO2) at...

In the present article, a series of coupled computational physics - fluid dynamics models were developed aiming at assessing the feasibility of photothermal synthetic fuel production from biogas (biomethane) and steam blends using plasmonic nanostructure Ag/TiO2 substrate (each, 0.1 μm in thickness) inside a thermal, momentum and mass transport bou...

Parabolic trough collectors (PTC) are capable of producing large amounts of energy using solar energy as a primary energy source. However, with the reduction of photovoltaic technology prices, it is essential to enhance their thermal efficiency to establish PTC as a sustainable technology. Nanofluids are advanced heat transfer fluids consisting of...

Using nano-enhanced phase change material (NePCM) rather than pure PCM significantly affects the melting/solidification duration and the stored energy, which are two critical design parameters for latent heat thermal energy storage (LHTES) systems. The present article employs a hybrid procedure based on the design of experiments (DOE), computationa...

The current article presents the entropy formation and heat transfer of the steady Prandtl-Eyring nanofluids (P-ENF). Heat transfer and flow of P-ENF are analyzed when nanofluid is passed to the hot and slippery surface. The study also investigates the effects of radiative heat flux, variable thermal conductivity, the material’s porosity, and the m...

The present study has been numerically surveyed the effect of different expansion angles on the heat transfer and pressure drop characteristics of a sudden expansion in a microtube. For this purpose, Cu/water nanofluids flowing with Reynolds numbers (Re) of 10, 25, 50, and 100 through expansion angles of 30º, 45º, 60º, and 90º were modeled. Governi...

Abstract: A numerical analysis of the log-law behavior for the turbulent boundary layer of a wall-bounded flow is performed over a flat plate immersed in three nanofluids (ZnO-water, SiO2-water, TiO2-water). Numerical simulations using CFD code are employed to investigate the boundary layer and the hydrodynamic flow. To validate the current numeric...

Nanofluids as a combination of base fluid and a low concentration of nano-sizedparticles of metal or metal oxides are used in different fields of human activity, includingengineering devices in power and chemical engineering, medicine, electronics, and others.The main reason for such huge variety of nanofluid applications is the possibility, fromon...

PTSCs (parabolic trough solar collectors) are widely employed in solar-thermal applications to attain high temperatures. The purpose of this study is to determine how much entropy is created when Powell-Eyring nanofluid (P-ENF) flows across porous media on a horizontal plane under thermal jump circumstances. The flow in PTSC was generated by nonlin...

This study is aimed to numerically investigate the mixing efficiency of non-Newtonian fluid flow based on surface acoustic waves. The standing ultrasonic waves have been used to investigate their effect on the mixing efficiency of shear-thinning fluids, as well as shear-thickening ones that flow through a microchannel. Due to differences in time sc...

A set of lab-scale experiments were designed and conducted to remedy Direct Blue 15 (DB15) dye using nontoxic halloysite nanotubes (HNT) with the view to be utilized in a textile industrial effluent (TIE). The DB15 adsorbed-HNT “sludge” was used as a reinforcing agent and plastic waste to fabricate the composite. To advance the knowledge and furthe...

Bioplastics are plastics derived from natural resources like corn starch, biomass, sugarcane bagasse, and food waste. Unlike fossil fuel-based plastics, they are bio-degradable entirely or partially. Therefore, bioplastics are relatively less harmful to the environment. Cellulose and starch-based bioplastics are already used for applications like p...

With the increase of high-power electrical components in modern ships, especially fully electric ships with electric propulsion drive (EPD), the cooling of EPD electrical components has become particularly important. Providing optimal configurations for heat sinks with high thermal efficiency plays an essential role in this regard. A new technique...

The first-ever use of halloysite nanotube (HNT), a relatively low-cost nanomaterial abundantly available with minor toxicity for removing brilliant green dye from aqueous media, is reported. The factors affecting adsorption were studied by assessing the adsorption capacity, kinetics, and equilibrium thermodynamic properties. All the experiments wer...

Nutraceutical industrial fenugreek seed spent (NIFGS), a relatively low-cost material abundantly available with little toxicity is used in crystal violet (CV) dye remediation from aqueous media and reported in the present study. To access the adsorption capacity, the factors affecting it are kinetics and the equilibrium thermodynamics. All the expe...

In this investigation, biodiesel was produced from Moringa oleifera oil through a transesterification process at operating conditions including a reaction temperature of 60 °C, catalyst concentration of 1% wt., reaction time of 2 h, stirring speed of 1000 rpm and methanol to oil ratio of 8.50:1. Biodiesel blends, B10 and B20, were tested in a compr...

This study focuses on double-tube heat exchanger (DTHE) to numerically examine their thermal performance by considering two types of hybrid nanofluids: (i) TiO2-γ-AlOOH/water and (ii) TiO2-γ-AlOOH/ethylene glycol. γ-AlOOH is an efficient material for heat transfer application. The heat exchanger consists of two tubes, which are called the inner and...

In order to determine the effect of the divergent nozzle length on the single-hose nozzle geometry, the computational couple simulation approach was employed. Furthermore, a model was successfully provided for the two-way exchange of mass, momentum, and energy between two phases. The energy that was exchanged between two involved phases, the solid...

Various nanofluids (NFs) have been prepared using nanoparticles (NPs) for dual fuel engine application in this present work. In the initial segment of the work, the NF’s are prepared using aluminum oxide nanoparticles (Al2O3). Further, nanoparticles were blended with diary scum oil methyl ester (DiSOME) in the mass fraction of 10–30 ppm in steps of...

Purpose The purpose of this study is to solve convective diffusion equation analytically by considering appropriate boundary conditions and using the Taylor-Aris method to determine the solute concentration, the effective and relative axial diffusivities. Design/methodology/approach >An analysis has been conducted on how body acceleration affects...

The improvement in performance has been observed by changing the injector nozzle's geometry of the dual-fuel liquid–gas engine. The combined effect of injector parameters and producer gas (PG) derived from the redgram stalk on the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has...

In the present study, a novel configuration of a rotating tube bundle was simulated under non-isothermal hydrodynamic conditions using a mixture model. Eight fins were considered in this study, which targeted the hydrodynamics of the system. An aqueous copper nanofluid was used as the heat transfer fluid. Various operating factors, such as rotation...

The need for fresh drinking water is increasing rapidly, and drinking water availability reduces day by day. Solar desalination is a viable option to change saltwater to fresh drinkable water. Solar still used for desalination includes processes like heating, evaporation, and condensation. The major problem faced by solar stills is that they have l...

Heterogeneous combustion in a diesel engine is noisier, uncontrolled and more polluting. This can be achieved with a strategic approach of a reactivity-controlled compression ignition (RCCI) mode engine that operates with low and high reactive fuel combinations. In the present work, a diesel engine is operated in RCCI mode with gaseous fuels viz. C...

Analyzing microchannel heat sinks (MCHS) in terms of the second thermodynamic law is useful, and it is necessary to examine MCHSs in terms of irreversible factors. In this research, the second thermodynamic law analysis is conducted for graphene–platinum/water hybrid nanofluid flow to assess how a new cylindrical microchannel heat sink has wavy-sha...

Considering the expansion of heat pump systems as one of the environment-friendly cycles, increasing these cycles' efficiency is significant. This paper is a comprehensive study of transcritical CO2 heat pump cycles in heating and cooling modes covering a range of ambient temperatures from −15 to 30 °C along with the range of 25 to 45 °C in cases o...

It has been more than two decades since the discovery of ‘nanofluids’ – mixtures of common liquids and solid nanoparticles with at least one dimension below 100 nm in size. While colloidal suspensions of particles (which include larger particles) have been studied for several decades, the term ‘nanofluids’ designates fluid systems that have enhance...

Purpose Two disastrous Tsunamis, one on the west coast of Sumatra Island, Indonesia, in 2004 and another in North East Japan in 2011, had seriously destroyed a large number of bridges. Thus, experimental tests in a wave flume and a fluid structure interaction (FSI) analysis were constructed to gain insight into tsunami bore force on coastal bridges...

In the current study, an effort is carried out to study pentanol's influence as low reactive fuel along with diesel and Thevetia peruviana methyl ester (TPME) as high reactive fuels in reactivity controlled compression ignition (RCCI) engine. The experiments are conducted on dual fuel engine at 50% load for RCCI mode of operation by varying pentano...

The current survey’s primary purpose is to conduct the computational modeling of laminar mixed convection heat transfer of nanofluids inside a CESC using a finite volume method. Water/Cu nanofluid at 0–6% volume fractions was selected as a working fluid. The investigation was done at Grashof numbers of 10,000 < Gr < 100,000 and Richardson numbers o...

In the present work, an attempt was made to experimentally quantify the boiling heat transfer coefficient (BHTC) of graphene oxide-water nano-suspension (NS) inflow boiling heat transfer regime. The NS was prepared at weight fractions of 0.025, 0.05, and 0.1% using the two-step method and further stabilized for 17 days (at wt% = 0.1). Results showe...

In the present work, the boiling heat transfer coefficient (BHTC) and fluid flow characteristics of graphene oxide nanoplatelets (GONPs) nano-suspensions in an annular heat exchanger (AHEX) were experimentally investigated. The BHTC, pressure drop (PD) and the friction factor (FF) of the heat exchanger was quantified, and effects of various operati...

In the original publication of the article, the affiliations of the third, fourth and fifth authors were incorrectly published.

In the present work, a series of experiments were designed and conducted to prepare biodiesel from cottonseed oil and to blend it with octanol. The thermal and mass transfer characteristics of the biodiesel were further improved by adding functionalized multi-walled carbon nanotubes (MWCNTs). The performance of the engine with the blended fuel was...

The current study aims to evaluate the performance and emission characteristics of a modified common rail direct injection (CRDI) diesel engine fueled by Ricinus communis biodiesel (RCME20), diesel (80%), and their blends with strontium-zinc oxide (Sr@ZnO) nanoparticle additives. The Sr@ZnO nanoparticles were synthesized using aqueous precipitation...

The efficiency of electronic equipment is the cornerstone of technology development. Thermal conditions significantly affect the performance of electronic components. Moreover, mechanical strength, size, and mass are the parameters that impose some limitations. Thus, they should be considered in the high tech industry. Therefore, it is needed to ex...

In the present work, a series of tests were designed and conducted aiming at investigating the thermal response and performance of a pulsating heat pipe operating with graphene-water ethylene glycol nano-suspension. The heat pipe was tested at various applied heat values between 10 and 100 W, concentrations of 0.1 g/l to 2 g/l of graphene nanoplate...

In the present work, a series of experiments were designed and conducted to prepare biodiesel from cottonseed oil and to blend it with octanol. The thermal and mass transfer characteristics of the biodiesel were further improved by adding functionalized multi-walled carbon nanotubes (MWCNTs). The performance of the engine with the blended fuel was...

One of the important parameters in developing dry ice blasting nozzle is the high-speed dry ice pellets. However, many studies focus primarily only on its performance without considering the noise emission that comes from an operating nozzle. In this method, the central composite optimization tool has been used. The two-way mass momentum and energy...

This paper reports a numerical study on heat transfer improvement in a double backward-facing expanding channel using different convectional fluids. A finite volume method with the k-ε standard model is used to investigate the effects of step, Reynolds number and type of liquid on heat transfer enhancement. Three types of conventional fluids (water...

The main aim of the present research is to measure the nucleate boiling heat transfer coefficient (BHTC) of aqueous glycol nano-suspension as a coolant around a horizontal heater. Alumina nanoparticles were added to the base fluid at a volumetric concentration of 1% to improve the thermal conductivity of the nano-suspension. The pressure of the sys...

The present investigation is directed towards synthesis of zinc oxide (ZnO) nanoparticles and steady blending with soybean biodiesel (SBME25) to improve the fuel properties of SBME25 and enhance the overall characteristics of a variable compression ratio diesel engine. The soybean biodiesel (SBME) was prepared using the transesterification reaction...

The present investigation uses a blend of Nigella sativa biodiesel, diesel, n-butanol, and graphene oxide nanoparticles to enhance the performance, combustion and symmetric characteristics and to reduce the emissions from the diesel engine of a modified common rail direct injection (CRDI). A symmetric toroidal-type combustion chamber and a six-hole...

Mechanical strength and thermal properties may limit the usage of an electronic component in the high-tech industry. This paper investigated the influence of using CuO nanoparticles in a radial configuration microchannel of a disk from the mechanical and thermal points of view. In this regard, a disk under thermal and mechanical loading had been co...

In this numerical study, a direct contact membrane distillation (DCMD) system has been modeled considering various angles for the membrane unit and the Reynolds number range of 500 to 2000. A two-dimensional model developed based on the Navier–Stokes, energy, and species transport equations were used. The governing equations were solved using the f...

Nanofluids in minichannels with various configurations are applied as cooling and heating fluids. Therefore, it is essential to have an optimal design of minichannels. For this purpose, a square channel with a cylinder in the center connected to wavy fins at various concentrations of an Al2O3 nanofluid is simulated using the finite volume method (F...

Waste heat recovery plays an important role in energy source management. Organic Rankine Cycle (ORC) can be used to recover low-temperature waste heat. In the present work a sample power plant waste heat was used to operate an ORC. First, two pure working fluids were selected based on their merits. Four possible thermodynamic models were considered...

Purpose The purpose of this study is to investigate the monodisperse cavitation of bubbly mixture flow for water and hydrogen mixture flows through a nozzle having a stenosis on the wall. Design/methodology/approach Two flow regions, namely, quasi-statically stable and quasi-statically unstable increase in the bubble radius, are considered. Differ...

This work is concerned with a comparison of measured and theoretical thermophysical properties of different nanofluids and using the properties to evaluate their suitability as a secondary working fluid in refrigeration systems, aiming at the external thermodynamic losses. Single-Walled Carbon Nanotubes (SWCNT) and silver nanoparticles were dispers...

This work investigates the use of iron oxide (III)–therminol 66 oil-based nanosuspensions in a convective heating system with potential heating applications in the buildings sector. In an experimental study, characteristics of nanofluids were measured, including heat capacity, thermal conductivity, and density. The influences of mass flow rate and...

In the present work, the chemical performance of a new catalyst mediated inside a micro-reactor for hydrogen production was experimentally assessed. The coated catalyst was prepared via particulate fouling technique by uniformly dispersing copper nano-flakes on silica as a conductive substrate. The catalyst was calcinated at 973 K to further streng...

In this paper, the effect of base fluid, temperature, solid volume concentration and nanoparticle type on electrical conductivity of nanofluid is reviewed for the first time. The work involves discussing the effect of base fluid, temperature, solid volume concentration and nanoparticle type on electrical conductivity of nanofluid among academic ana...

In this article, a thermodynamic study was conducted on the energetic and exergy performance of a new configuration of liquid chemical looping gasification (LCLG) plant integrated with a power block to assess the overall performance of the system including exergy partitioned in syngas and first law efficiency (FLE). LCLG is a relatively new concept...

In the present numerical study, mixed flow of the non-Newtonian water/Al2O3 nanofluid with 0–4% nanoparticles volume fractions (φ) inside a two-dimensional square cavity with hot and cold lid-driven motion and porous media is simulated at Richardson numbers (Ri) of 0.01, 10 and 100 and Darcy numbers (Da) of 10⁻⁴ ≤ Da ≤ 10⁻² using Fortran computer c...

In this study, a series of low-concentration carbon nanotubes (CNT) water-based nanofluids (0.0055, 0.055, 0.111 and 0.278 vol%) were used as coolants in a shell and tube cooler of the residue fluid catalytic cracking gasoline product to analyze their effects on heat performance of the heat exchanger. The coolants and gasoline flow in tube side and...

In the present work, an experimental study was conducted to quantify the heat transfer coefficient of a liquid metal mixture including gallium, indium and tin (Ga-In-Sn) under various heat fluxes inside a compact heat exchanger equipped with rectangular micro-passages. The microchannel was fabricated from Cu/Zn alloy using computer numerical contro...

This article presents the results of an experimental research on the thermal efficiency (TE) of an evacuated tube solar collector (ETSC) working with a nano-suspension of carbon nanotubes dispersed in distillated water. The efficacy of filling ratio (FR) of the heat pipes; the tilt angle (TA) of the collector, and the dispersion mass fraction of th...

The Support Vector Machine method is employed to predict the thermo-physical properties of hybrid nanofluid composed of TiO2 and ZnO nanoparticles and ethylene glycol as the base fluid at different temperatures, shear rates, and nanoparticle volume fractions. The present work novelty is to use a new sensitivity analysis based on this method which h...

Formation of bubbles in water inside an annulus pipe in a flow boiling regime was experimentally investigated. The effect of various variables, such as total dissolved solid materials (TDS) in terms of mass fraction, flow rate of water, and applied heat flux (HF) on the heat transfer coefficient (HTC) and bubble behavior of water, was experimentall...

A study was conducted to enhance the thermo-hydraulic performance of a rectangular solar air passage with integrated spherical-shaped turbulence promoters. The effects of the flow and geometric parameters on heat transfer along with the friction factor were studied. The experiments were carried out with a relevant range of the Reynolds number from...

To understand the potential effect of the tsunami forces on a coastal bridge due to tsunami bore, a series of experimental tests was conducted and results were compared to those of calculated with a fluid structure interaction (FSI) analysis. Various wave heights and shallow water were utilized in the experiments and computational process. A 1:40 s...

Purpose Solar-driven water desalination technologies are rapidly developing with various links to other renewable sources. However, the efficiency of such systems severely depends on the design parameters. This paper presents results from an investigation on the effect of the glass cover inclination angle on the performance of two stepped solar sti...

A thermodynamic assessment is conducted for a new configuration of a supercritical water gasification plant with a water–gas shift reactor. The proposed configuration offers the potential for the production of syngas at different H2:CO ratios for various applications such as the Fischer–Tropsch process or fuel cells, and it is a path for addressing...

In the present work, an experimental investigation is performed to assess the thermal and electrical performance of a photovoltaic solar panel cooling with multi-walled carbon nanotube–water/ethylene glycol (50:50) nano-suspension (MWCNT/WEG50). The prepared nanofluid was stabilized using an ultrasonic homogenizer together with the addition of 0.1v...

Today, gas condensate has an important application in industries. One of the high consumption liquid gases is Argon which is used different methods for its liquefaction. However, the costs of this procedure is very high.In this paper, the best cycle from thermodynamic and economic point of view was achieved by thermoeconomic analysis. For this purp...

In this study, thermo-hydraulic performance of an ecofriendly nanofluid containing graphene nanoplatelets is examined within a tube enhanced with rotating twisted tape. The variable parameters consist of rotational speed, twisted ratio (λ), and nanoparticle weight fraction, which their influences are evaluated. It is found that the convective heat...

In this research study, a novel integrated solar based combined, cooling, heating and, power (CCHP) is proposed consisting of Parabolic trough solar collectors (PTSC) field, a dual-tank molten salt heat storage, an Organic Rankine Cycle (ORC), a Proton exchange membrane fuel cell (PEMFC), a Proton exchange membrane electrolyzer (PEME), and a single...

Purpose This study aims to model the nanofluid flow in microchannel heat sinks having the same length and hydraulic diameter but different cross-sections (circular, trapezoidal and square). Design/methodology/approach The nanofluid is graphene nanoplatelets-silver/water, and the heat transfer in laminar flow was investigated. The range of coolant...

Purpose This study aims to numerically study the forced convection effects on a two-dimensional microchannel filled with a porous material containing the water/FMWCNT nanofluid. The upper and lower microchannel walls were fully insulated thermally along 15 per cent of their lengths at each end of the microchannel, with the in-between length being e...

In this research, flow boiling heat transfer of zirconia–water nanofluid inside a heat exchanger was experimentally investigated. The system was assessed for heat fluxes ranging from 10 to 150 kW m⁻², inlet temperatures of 323 K to 353 K, mass flow rates of 1–10 kg s⁻¹ and mass concentrations of mass% = 0.1 to 0.3%. Results showed that the boiling...

In the current study, laminar heat transfer and direct fluid jet injection of oil/MWCNT nanofluid were numerically investigated with a finite volume method. Both slip and no-slip boundary conditions on solid walls were used. The objective of this study was to increase the cooling performance of heated walls inside a rectangular microchannel. Reynol...

In the present work, we report the results of a series of experiments for the hydrogen production via steam reforming of methanol with Cu–SiO2 porous catalyst coated on the internal walls of a micro-reactor with parallel micro-passages. The catalyst was prepared by coating copper and silica nanoparticles on the internal surface of the microchannel...

Improving heat transfer rate and reducing manufacturing costs are two significant objectives in the optimal design of heat sinks, which are used in electrical devices. Due to economic reasons in cooling applications, different methods were used to increase the efficiency of thermal devices such as creating perforations in fins, which reduces the vo...

Purpose Electronic components’ efficiency is the cornerstone of technology progress. The cooling process used for electronic components plays a main role in their performance. Embedded high-conductivity material and provided microchannel heat sink are two common cooling methods. The former is expensive to implement while the latter needs micro-pump...

Purpose The purpose of this paper is to improve the lattice Boltzmann method’s ability to simulate a microflow under constant heat flux. Design/methodology/approach Develop the thermal lattice Boltzmann method based on double population of hydrodynamic and thermal distribution functions. Findings The buoyancy forces, caused by gravity, can change...

Solar-driven water desalination technologies are rapidly developing with various links to other renewable sources. However, the efficiency of such systems severely depends on the design parameters. The present study focused on using graphene oxide (GO) with the Φ = 0.2, 0.4 and 0.6 wt.% dispersed in paraffin, as phase-change materials (PCMs), to im...