Forced convection and entropy generation past a series of porous bodies with internal heat generation

2021 ◽  
Author(s):  
Daipayan Sen ◽  
Agnivo Ghosh ◽  
Aranyak Chakravarty ◽  
Sandip Sarkar ◽  
Nirmal K. Manna ◽  
...  
Keyword(s):  
Forced Convection ◽  
Entropy Generation ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Porous Bodies

scholarly journals Study of entropy generation in a slab with non-uniform internal heat generation

2013 ◽  
Vol 17 (3) ◽  
pp. 943-950 ◽  
Author(s):  
Haj El
Keyword(s):  
Heat Transfer ◽  
Entropy Generation ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Total Entropy ◽  
Transfer Parameters ◽  
Rectangular Slab ◽  
Steady State Heat ◽  
Dimensionless Heat

Analysis of entropy generation in a rectangular slab with a nonuniform internal heat generation is presented. Dimensionless local and total entropy generation during steady state heat conduction through the slab are obtained. Two different boundary conditions have been considered in the analysis, the first with asymmetric convection and the second with constant slab surface temperature. Temperature distribution within the slab is obtained analytically. The study investigates the effect of some relevant dimensionless heat transfer parameters on entropy generation. The results show that there exists a minimum local entropy generation but there does not exist a minimum total entropy generation for certain combinations of the heat transfer parameters. The results of calculations are presented graphically.

Geometric Optimisation of Forced Convection in Cooling Channels With Internal Heat Generation

2010 ◽  
Author(s):  
Olabode T. Olakoyejo ◽  
Tunde Bello-Ochende ◽  
Josua P. Meyer
Keyword(s):  
Pressure Drop ◽  
Forced Convection ◽  
Heat Generation ◽  
Applied Pressure ◽  
Internal Heat ◽  
Solid Material ◽  
Internal Heat Generation ◽  
Geometric Optimization ◽  
Peak Temperature ◽  
Cooling Channels

This paper presents a three dimensional geometric optimization of cooling channels in forced convection with internal heat generation within the solid. Three configurations were studied, circular channels, square channels and rectangular channels with different porosities. The configurations were optimized in such a way that the peak temperature is minimum. The optimization is subject to the constraint of fixed volume and solid material. The fluid is forced through the channels by the pressure difference across the channels. The structure has two degrees of freedom as design variables: channel hydraulic diameter and channel-to-channel spacing. The results obtained show the behaviour of the applied pressure drop on the optimized geometry. Results also show that as pressure drop increases the minimized peak temperature decreases.

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