Conjugate natural convection in enclosures with external and internal heat sources

2006 ◽  
Vol 44 (3-4) ◽  
pp. 148-165 ◽  
Author(s):  
Fu-Yun Zhao ◽  
Guang-Fa Tang ◽  
Di Liu
Keyword(s):  
Natural Convection ◽  
Internal Heat ◽  
Heat Sources ◽  
Conjugate Natural Convection ◽  
Internal Heat Sources

Linear stability of natural convection in a multilayer system of fluid and porous layers with internal heat sources

2013 ◽  
Vol 224 (5) ◽  
pp. 1103-1114 ◽  
Author(s):  
Saman Shalbaf ◽  
Aminreza Noghrehabadi ◽  
Mohammad Reza Assari ◽  
Alireza Daneh Dezfuli
Keyword(s):  
Natural Convection ◽  
Linear Stability ◽  
Internal Heat ◽  
Multilayer System ◽  
Heat Sources ◽  
Porous Layers ◽  
Internal Heat Sources

scholarly journals Natural Convection of a Heat-Generating Fluid Within Closed Vertical Cylinders and Spheres

1976 ◽  
Vol 98 (1) ◽  
pp. 55-61 ◽  
Author(s):  
R. J. Kee ◽  
C. S. Landram ◽  
J. C. Miles
Keyword(s):  
Nusselt Number ◽  
Natural Convection ◽  
Convective Flow ◽  
Internal Heat ◽  
Spherical Geometry ◽  
Heat Sources ◽  
Internal Heat Sources ◽  
Cylinders And Spheres ◽  
Vertical Cylinders ◽  
Generalized Correlation

Steady natural convective flow fields were numerically and experimentally characterized for 0.7 Prandtl number fluids having constant, uniformly distributed, internal heat sources. The bounding isothermal walls containing the fluid were considered to be either a sphere or a cylinder of finite height. An instrumented cylinder containing radioactive tritium gas was used to demonstrate experimental and analytical agreement for local temperatures over a range of Grashof numbers. For the spherical geometry, a generalized correlation was obtained for the surface-averaged Nusselt number as a function of a modified Grashof number.

Boundary Condition Dependent Natural Convection in a Rectangular Pool With Internal Heat Sources

2006 ◽  
Vol 129 (5) ◽  
pp. 679-682 ◽  
Author(s):  
Seung Dong Lee ◽  
Jong Kuk Lee ◽  
Kune Y. Suh
Keyword(s):  
Heat Transfer ◽  
Boundary Condition ◽  
Natural Convection ◽  
Convection Heat Transfer ◽  
Internal Heat ◽  
Working Fluid ◽  
Natural Convection Heat Transfer ◽  
Heat Sources ◽  
Internal Heat Sources ◽  
Volumetric Heat Generation

This paper presents results of steady-state experiments concerned with natural convection heat transfer of air in a rectangular pool in terms of the Nusselt number (Nu) versus the modified Rayleigh number (Ra′) varying from 109 to 1012. Cartridge heaters were immersed in the working fluid to simulate uniform volumetric heat generation. Two types of boundary conditions were adopted in the test: (I) top cooled, and (II) top and bottom cooled. The other sides were kept insulated. In the case of boundary condition II, the upward heat transfer ratio, Nuup∕(Nuup+Nudn), turned out to be 0.7–0.8 in the range of Ra′ between 1.05×1010 and 3.68×1011.

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