Numerical Investigation of Local Thermal Non-Equilibrium Natural Convection in a Square Enclosure with Heat Generating Porous Medium

TIAN Lin; HUANG Zi-peng; WANG Gang

Volume 33 Issue S1

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2012 > 33(S1): 95-99,103

TIAN Lin, HUANG Zi-peng, WANG Gang. Numerical Investigation of Local Thermal Non-Equilibrium Natural Convection in a Square Enclosure with Heat Generating Porous Medium[J]. Nuclear Power Engineering, 2012, 33(S1): 95-99,103.

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TIAN Lin, HUANG Zi-peng, WANG Gang. Numerical Investigation of Local Thermal Non-Equilibrium Natural Convection in a Square Enclosure with Heat Generating Porous Medium[J]. Nuclear Power Engineering, 2012, 33(S1): 95-99,103.

Citation:

TIAN Lin, HUANG Zi-peng, WANG Gang. Numerical Investigation of Local Thermal Non-Equilibrium Natural Convection in a Square Enclosure with Heat Generating Porous Medium[J]. Nuclear Power Engineering, 2012, 33(S1): 95-99,103.

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Numerical Investigation of Local Thermal Non-Equilibrium Natural Convection in a Square Enclosure with Heat Generating Porous Medium

1. Shanghai Nuclear Engineering Research and Design Institute, Shanghai, 200233, China;
2. School of Civil Engineering, Lanzhou University of Technology, Lanzhou, 730050, China

Received Date: 2012-02-08
Rev Recd Date: 2012-03-11

Available Online: 2025-03-08

Abstract

Abstract

Effect of Ra number and Da number on steady laminar natural convection in square enclosure filled with heat generating porous medium is investigated by local thermal non-equilibrium model and non-Darcy model numerically with the effective fluid-to-solid thermal conductivity ratio as constant.It is found that the Nuf increases with the increasing of Da when Ra is constant;Moreover,Nuf increases with the increasing of Ra when Da is constant.However,the values of Nus of the four walls are almost the same and equal to a constant for the cases discussed.The absolute value of Nuf of left wall is equal to that of right wall,furthermore,both of them are less than that of the ceiling wall,the heat transfer between fluid and bottom wall is the smallest compared with those of the other three walls.The non-equilibrium effect is significant when dimensionless volume heat transfer coefficient H is quite small.
- Local thermal non-equilibrium,
- Intemal heat source,
- Porous medium,
- Natural convective heat transfer,
- Numerical simulation

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