نتایج جستجو برای: entropy generation and bejan number
تعداد نتایج: 16938034 فیلتر نتایج به سال:
Heat transfer phenomena of flat plate solar collector filled with different nanofluids has been investigated numerically. Galerkin’s Finite Element Method is used to solve the problem. Heat transfer rate, average bulk temperature, average sub-domain velocity, outlet temperature, thermal efficiency, mean entropy generation and Bejan number has been investigated by varying the solid nanoparticle ...
Abstract The current investigation is concerned with heat transfer and entropy generation analysis in a horizontal channel brimming porous medium the existence of aligned magnetic field, viscous joules dissipation temperature gradient source. boundary conditions are treated as constant values for velocity at lower upper walls. An explicit solution governing equations has been attained closed sy...
random number generation is one of the human abilities. it is proven that the sequence of random numbers generated by people do not follow full randomness criteria. these numbers produced by brain activity seem to be completely non stationary. in this paper, we show that there is a distinction between the random numbers generated by different people who provides the discrimination capability, a...
The current investigation deliberates the consequence of glycerin-based carbon nanotubes with velocity slip in Darcy-Forchheimer porous medium on a convectively heated Riga plate. Fourier heat flux theory was replaced by Cattaneo-Christov theory. Moreover, nonlinear facets radiation are also included energy expression, and this creates expression which becomes highly nonlinear. governing flow p...
In the 21th century, renewable energy has to play very important role in socio-economic and industrial development. This paper evaluates exergy- analysis, which is based on second law of thermodynamics. The triangular solar heater developed determine heat transfer rate, thermal efficiency, exergy efficiency Bejan number. addition, we have examined effects entropy generation with respect radiati...
This work compares a theoretical model with consolidated numerical related to the thermodynamic performance of boehmite alumina nanoparticles in different formats counterflow double pipe heat exchanger. The shapes non-spherical under analysis are platelets, blades, cylindrical, and bricks. second law thermodynamics is applied determine Nusselt number, pressure drop, thermal efficiency, viscous ...
The present paper aims to analyze the thermal convective heat transport and generated irreversibility of water-Cu-Al2O3 hybrid nanosuspension in an odd-shaped cavity. side walls are adiabatic, internal external borders enclosure isothermally kept at high low temperatures Thand Tc, respectively. control equations based on conservation laws formulated dimensionless form worked out employing Galer...
The present study carefully examined entropy generation during wustite pellet reduction to sponge iron. The finite volume method was used to solve the governing equations. The grain model was used to simulate the reaction rate. The reactant gases including carbon monoxide and hydrogen were converted to water and carbon dioxide after wustite reduction. Entropy is generated by heat transfer, mass...
The present study examines the entropy generation of graphene nanoplatelet (GnP) suspended in different basefluids, theoretically. GnP water (W), ethylene glycol (EG) and glycol- (EGW, 1:1) was examined under laminar flow state a unit length mini micro-channel 3mm 0.05mm diameter. coefficient conductivity (Ck) viscosity (C?) nanofluid were determined from experimental analysis their order magni...
This study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effects of helical angle, channel aspect ratio, and Reynolds number, which were regarded as main para...
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