Mixed convection in an inclined channel with a discrete heat source

2003 ◽  
Author(s):  
C.Y. Choi ◽  
A. Ortega
Keyword(s):  
Heat Source ◽  
Mixed Convection ◽  
Inclined Channel ◽  
Discrete Heat Source

Conjugate Mixed Convection With Surface Radiation From a Vertical Plate With a Discrete Heat Source

2000 ◽  
Vol 123 (4) ◽  
pp. 698-702 ◽  
Author(s):  
C. Gururaja Rao ◽  
C. Balaji ◽  
S. P. Venkateshan
Keyword(s):  
Friction Coefficient ◽  
Heat Source ◽  
Mixed Convection ◽  
Vertical Plate ◽  
Numerical Study ◽  
Surface Radiation ◽  
Large Set ◽  
Computational Domain ◽  
Laminar Mixed Convection ◽  
Discrete Heat Source

The results of a numerical study of the problem of two-dimensional, steady, incompressible, conjugate, laminar, mixed convection with surface radiation from a vertical plate with a flush-mounted discrete heat source are reported. The governing equations, written in vorticity-stream function form, are solved using a finite-volume based finite difference method. A hybrid grid system has been employed for discretization of the computational domain. The effects of (i) the magnitude and location of the heat source, (ii) the material and surface properties of the plate, and (iii) the free-stream velocity on both heat transfer and fluid flow have been studied. Based on a large set of (more than 550) numerical data, correlations have been developed for maximum and average non-dimensional plate temperatures and mean friction coefficient. A method for evaluating the forced convection mean friction coefficient component, which may be used in estimating the power input required for maintaining the flow, has been proposed.

Mixed convection in vertical channels with a discrete heat source

1995 ◽  
Vol 30 (3) ◽  
pp. 159-166 ◽  
Author(s):  
H. Türkoĝlu ◽  
N. Yücel
Keyword(s):  
Heat Source ◽  
Mixed Convection ◽  
Discrete Heat Source

Mixed Convection of Impinging Air Cooling Over Heat Sink in Telecom System Application

2003 ◽  
Author(s):  
Musa S. Alshuqairi ◽  
Gamal Refai-Ahmed ◽  
Dereje Agonafer
Keyword(s):  
Heat Transfer ◽  
Heat Source ◽  
Mixed Convection ◽  
Heat Sink ◽  
Three Dimensional ◽  
Air Cooling ◽  
Transfer Rates ◽  
Nusselt Numbers ◽  
Air Jet ◽  
Discrete Heat Source

The current numerical investigation will examine the effect of an impinging mixed convection air jet on the heat transfer rate of a parallel flat plate heat sink. A three-dimensional numerical model was developed to evaluate the effects of the nozzle diameter (d), nozzle-to-target vertical placement (H/d), Rayleigh number and the jet Reynolds number on the heat transfer rates from a discrete heat source. Simulations were performed for a Prandtl number of 0.7 and for Reynolds numbers ranging from 100 to 5000. The governing equations were solved in the dimensionless form using a commercial finite-volume package. Average Nusselt numbers were obtained, at H/d = 3 and two jet diameters, for the bare heat source, for the heat source with a base heat sink and for the heat source with the finned heat sink. The heat transfer rates from the bare heat sources surface have been compared with the ones obtained with the heat sink in order to determine the overall performance of the heat sink in an impingement configuration.

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