Thermal radiation effect on non-Darcy natural convection with lateral mass transfer

2001 ◽  
Vol 37 (2-3) ◽  
pp. 161-165 ◽  
Author(s):  
M. A. El-Hakiem ◽  
M. F. El-Amin
Keyword(s):  
Mass Transfer ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Lateral Mass ◽  
Thermal Radiation Effect

scholarly journals On Nonperturbative Techniques for Thermal Radiation Effect on Natural Convection past a Vertical Plate Embedded in a Saturated Porous Medium

2008 ◽  
Vol 2008 ◽  
pp. 1-11 ◽  
Author(s):  
O. D. Makinde ◽  
R. J. Moitsheki
Keyword(s):  
Porous Medium ◽  
Natural Convection ◽  
Thermal Radiation ◽  
Radiation Effect ◽  
Saturated Porous Medium ◽  
Adomian Decomposition Method ◽  
Variational Iteration Method ◽  
Approximation Technique ◽  
Adomian Decomposition ◽  
Thermal Radiation Effect

In this article, the heat transfer characteristics of natural convection about a vertical permeable flat surface embedded in a saturated porous medium are studied by taking into account the thermal radiation effect. The plate is assumed to have a power-law temperature distribution. Similarity variables are employed in order to transform the governing partial differential equations into a nonlinear ordinary differential equation. Both Adomian decomposition method (ADM) and He's variational iteration method (VIM) coupled with Padé approximation technique are implemented to solve the reduced system. Comparisons with previously published works are performed, and excellent agreement between the results is obtained.

Thermal radiation effect on thermal explosion in gas containing fuel droplets

1999 ◽  
Vol 3 (4) ◽  
pp. 769-787 ◽  
Author(s):  
Igor Goldfarb ◽  
Vladimir Gol'dshtein ◽  
Grigory Kuzmenko ◽  
Sergei Sazhin
Keyword(s):  
Thermal Radiation ◽  
Thermal Explosion ◽  
Radiation Effect ◽  
Fuel Droplets ◽  
Thermal Radiation Effect

Numerical Simulation of Heat Transfer Characteristics for Two Metallic TPS Structures

2010 ◽  
Vol 156-157 ◽  
pp. 1568-1573
Author(s):  
Hai Yong Liu ◽  
Hong Fu Qiang
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
Heat Conductivity ◽  
Radiation Effect ◽  
Thermal Protection ◽  
Heating Temperature ◽  
Three Dimensional ◽  
Metallic Layer ◽  
Internal Cooling ◽  
Thermal Radiation Effect

Two structures of metallic thermal protection system(TPS) for hypersonic vehicle were presented. One model was a multi-layer construction and the other has cavities in the metallic layer. Numerical simulations were conducted on the three-dimensional TPS models using CFD software of Gambit and Fluent. Two heating temperatures of 1073K and 773K with constant temperature and isothermal boundary conditions were considered. Heat transfer was treated as single conductivity and thermal radiation effect was not involved. The results of simulation investigation showed that: The metallic layer had poor capability to restrict the heat conductivity. Heat was easier to transfer across the bracket into the internal part of the TPS. The ability of cavities in metallic layer to resist heat conductivity was limited. The temperature-heating time variation pattern was similar for different external heating temperature. Internal cooling was important for the TPS. The thermal radiation effect on the TPS would be focused in further research.

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