Effect of inertial particles with different specific heat capacities on heat transfer in particle-laden turbulent flow

doi:10.1007/s10483-017-2224-9

Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (8): 1149-1158.doi: https://doi.org/10.1007/s10483-017-2224-9

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Effect of inertial particles with different specific heat capacities on heat transfer in particle-laden turbulent flow

Caixi LIU¹, Shuai TANG¹, Yuhong DONG^1,2

1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;
2. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China

Received:2016-10-26 Revised:2016-11-17 Online:2017-08-01 Published:2017-08-01
Contact: Yuhong DONG E-mail:dongyh@staff.shu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 11272198 and 11572183)

Abstract

Abstract:

The effect of inertial particles with different specific heat on heat transfer in particle-laden turbulent channel flows is studied using the direct numerical simulation (DNS) and the Lagrangian particle tracking method. The simulation uses a two-way coupling model to consider the momentum and thermal interactions between the particles and turbulence. The study shows that the temperature fields display differences between the particle-laden flow with different specific heat particles and the particle-free flow, indicating that the particle specific heat is an important factor that affects the heat transfer process in a particle-laden flow. It is found that the heat transfer capacity of the particle-laden flow gradually increases with the increase of the particle specific heat. This is due to the positive contribution of the particle increase to the heat transfer. In addition, the Nusselt number of a particle-laden flow is compared with that of a particle-free flow. It is found that particles with a large specific heat strengthen heat transfer of turbulent flow, while those with small specific heat weaken heat transfer of turbulent flow.

Key words: asynchronous iterative method, relaxed method, linear systems of equations, direct numerical simulation (DNS), particle-laden turbulent flow, Lagrangian tracking approach, heat transfer

2010 MSC Number:

76T20

Caixi LIU, Shuai TANG, Yuhong DONG. Effect of inertial particles with different specific heat capacities on heat transfer in particle-laden turbulent flow. Applied Mathematics and Mechanics (English Edition), 2017, 38(8): 1149-1158.

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References

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Effect of inertial particles with different specific heat capacities on heat transfer in particle-laden turbulent flow

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