Conjugate heat transfer analysis of liquid metal turbulent flow through a horizontal channel by LES

Satish, N. and Venkatasubbaiah, K. (2020) Conjugate heat transfer analysis of liquid metal turbulent flow through a horizontal channel by LES. Numerical Heat Transfer, Part A: Applications, 78 (4). pp. 140-157. ISSN 1040-7782

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Abstract

Conjugate heat transfer analysis of liquid metal turbulent flow through a horizontal channel has been numerically studied using a large eddy simulation (LES) technique. The effect of wall thickness and heat conduction in the wall on flow and thermal characteristics of low Prandtl number liquid metals has been investigated and reported here. Results are presented for three different liquid metal flows with different Reynolds numbers and different wall materials with wall thickness. The flow field is modeled as transient two-dimensional incompressible turbulent forced convection flow. Wall Adapting Local Eddy Viscosity (WALE) sub-grid scale (SGS) model is used to solve the turbulence closure. Two-dimensional transient heat conduction equation is solved to know the temperature distribution in the wall. A finite difference method solver is developed for solving the governing equations using sixth-order accuracy of compact schemes. Prandtl number and Reynolds number alter the heat transfer characteristics. Wall thickness shows a significant effect on the convective heat transfer rate. The new correlation of average Nusselt number has been proposed, including the effect of wall thickness for constant heat flux boundary condition. The present results are validated with DNS data and experimental results available in the literature.

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IITH Creators:
IITH CreatorsORCiD
Venkatasubbaiah, KUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Conjugate heat transfer analysis; Convective heat transfer rates; Heat transfer characteristics; Large Eddy simulation techniques; Subgrid scale models; Thermal characteristics; Turbulent forced convection; Two-dimensional transient
Subjects: Others > Mechanics
Others > Aerospace Technology
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 17 Jul 2021 06:52
Last Modified: 22 Feb 2022 04:46
URI: http://raiith.iith.ac.in/id/eprint/8391
Publisher URL: http://doi.org/10.1080/10407782.2020.1782134
OA policy: https://v2.sherpa.ac.uk/id/publication/5904
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