Prediction of entropy generation for nanofluid flow through a triangular minichannel using neural network

2016 ◽  
Vol 27 (2) ◽  
pp. 673-683 ◽  
Author(s):  
Mehdi Bahiraei ◽  
Shakiba Mohammadi Majd
Keyword(s):  
Neural Network ◽  
Entropy Generation ◽  
Nanofluid Flow ◽  
Flow Through

Exergy and entropy generation analysis of TiO2–water nanofluid flow through the water block as an electronics device

2016 ◽  
Vol 101 ◽  
pp. 104-111 ◽  
Author(s):  
S.S. Khaleduzzaman ◽  
M.R. Sohel ◽  
I.M. Mahbubul ◽  
R. Saidur ◽  
J. Selvaraj
Keyword(s):  
Entropy Generation ◽  
Nanofluid Flow ◽  
Flow Through ◽  
Water Block

MHD micropolar nanofluid flow through an inclined channel with entropy generation subjected to radiative heat flux, viscous dissipation and multiple slip effects

2020 ◽  
Vol 16 (6) ◽  
pp. 1475-1496
Author(s):  
A. Roja ◽  
B.J. Gireesha ◽  
B.C. Prasannakumara
Keyword(s):  
Heat Flux ◽  
Viscous Dissipation ◽  
Entropy Generation ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Nanofluid Flow ◽  
Content Type ◽  
Inclined Channel ◽  
Micropolar Nanofluid ◽  
Flow Through

PurposeMiniaturization with high thermal performance and lower cost is one of the advanced developments in industrial science chemical and engineering fields including microheat exchangers, micro mixers, micropumps, cooling microelectro mechanical devices, etc. In addition to this, the minimization of the entropy is the utilization of the energy of thermal devices. Based on this, in the present investigation, micropolar nanofluid flow through an inclined channel under the impacts of viscous dissipation and mixed convection with velocity slip and temperature jump has been numerically studied. Also the influence of magnetism and radiative heat flux is used.Design/methodology/approachThe nonlinear system of ordinary differential equations are obtained by applying suitable dimensionless variables to the governing equations, and then the Runge–Kutta–Felhberg integration scheme is used to find the solution of velocity and temperature. Entropy generation and Bejan number are calculated via using these solutions.FindingsIt is established to notice that the entropy generation can be improved with the aspects of viscous dissipation, magnetism and radiative heat flux. The roles of angle of inclination (α), Eckert number (Ec), Reynolds number (Re), thermal radiation (Rd), material parameter (K),  slip parameter (δ), microinertial parameter (aj), magnetic parameter (M), Grashof number (Gr) and pressure gradient parameter (A) are demonstrated. It is found that the angle of inclination and Grashof number enhances the entropy production while it is diminished with material parameter and magnetic parameter.Originality/valueElectrically conducting micropolar nanofluid flow through an inclined channel subjected to the friction irreversibility with temperature jump and velocity slip under the influence of radiative heat flux has been numerically investigated.

scholarly journals Investigation of Forced Convection Enhancement and Entropy Generation of Nanofluid Flow through a Corrugated Minichannel Filled with a Porous Media

Entropy ◽  
2020 ◽  
Vol 22 (9) ◽  
pp. 1008
Author(s):  
Ehsan Aminian ◽  
Hesam Moghadasi ◽  
Hamid Saffari ◽  
Amir Mirza Gheitaghy
Keyword(s):  
Heat Transfer ◽  
Porous Media ◽  
Entropy Generation ◽  
Volume Fraction ◽  
Numerical Procedure ◽  
Numerical Data ◽  
Flow In Porous Media ◽  
Geometrical Parameters ◽  
Nanofluid Flow ◽  
Flow Through

Corrugating channel wall is considered to be an efficient procedure for achieving improved heat transfer. Further enhancement can be obtained through the utilization of nanofluids and porous media with high thermal conductivity. This paper presents the effect of geometrical parameters for the determination of an appropriate configuration. Furthermore, the optimization of forced convective heat transfer and fluid/nanofluid flow through a sinusoidal wavy-channel inside a porous medium is performed through the optimization of entropy generation. The fluid flow in porous media is considered to be laminar and Darcy–Brinkman–Forchheimer model has been utilized. The obtained results were compared with the corresponding numerical data in order to ensure the accuracy and reliability of the numerical procedure. As a result, increasing the Darcy number leads to the increased portion of thermal entropy generation as well as the decreased portion of frictional entropy generation in all configurations. Moreover, configuration with wavelength of 10 mm, amplitude of 0.5 mm and phase shift of 60° was selected as an optimum geometry for further investigations on the addition of nanoparticles. Additionally, increasing trend of average Nusselt number and friction factor, besides the decreasing trend of performance evaluation criteria (PEC) index, were inferred by increasing the volume fraction of the nanofluid (Al2O3 and CuO).

scholarly journals Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

2020 ◽  
Vol 31 (1) ◽  
pp. 49 ◽  
Author(s):  
Krishan Kumar ◽  
Rajan Kumar ◽  
Rabinder Singh Bharj
Keyword(s):  
Heat Transfer ◽  
Entropy Generation ◽  
Nanofluid Flow ◽  
Flow Through

Entropy generation analysis due to heat transfer and nanofluid flow through microchannels: a review

2020 ◽  
Vol 31 (1) ◽  
pp. 49
Author(s):  
Rabinder Singh Bharj ◽  
Krishan Kumar ◽  
Rajan Kumar
Keyword(s):  
Heat Transfer ◽  
Entropy Generation ◽  
Nanofluid Flow ◽  
Flow Through

Analysis of entropy generation using nanofluid flow through the circular microchannel and minichannel heat sink

2013 ◽  
Vol 46 ◽  
pp. 85-91 ◽  
Author(s):  
M.R. Sohel ◽  
R. Saidur ◽  
N.H. Hassan ◽  
M.M. Elias ◽  
S.S. Khaleduzzaman ◽  
...  
Keyword(s):  
Entropy Generation ◽  
Heat Sink ◽  
Nanofluid Flow ◽  
Circular Microchannel ◽  
Flow Through
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