The angular discretization impact of thermal radiation computations on heat transfer in rooms

CATALIN, TEODOSIU and RALUCA, TEODOSIU and VIOREL, ILIE (2016) The angular discretization impact of thermal radiation computations on heat transfer in rooms. In: Fourth International Conference on Advances in Civil, Structural and Mechanical Engineering - CSM 2016, 17 - 18 March, 2016, Birmingham City University, Birmingham, UNITED KINGDOM.

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Abstract

The objective of this study is to evaluate the accuracy of CFD (Computational Fluid Dynamics) simulations for airflows driven by buoyancy in heated real scale rooms. In addition, this study is focusing on the influence of angular discretization used for thermal radiation computations in CFD modeling. The numerical results are compared with experimental data from the literature, based on investigations dealing with thermal coupling “room-electric heat sources”, using full scale test cells. The results show that there is no sensitivity of radiative heat flux to the walls of the room to angular discretization used in the radiation model. This means that for simple geometries, minimum angular discretization can be used for the radiation model in CFD simulations, leading to important savings in CPU (Central Processing Unit) time. Nevertheless, this deduction must be checked by further work for other configurations.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: thermal radiation, CFD modeling, heat source
Depositing User: Mr. John Steve
Date Deposited: 25 Mar 2019 12:11
Last Modified: 25 Mar 2019 12:11
URI: http://publications.theired.org/id/eprint/883

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