BEM model for radiative transport phenomena in optically thick compressible viscous fluids
| Autor: | Jure Ravnik, L. Škerget, M. Hriberšek, P. Crnjac |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Convection Natural convection Applied Mathematics General Engineering 02 engineering and technology Mechanics Heavy traffic approximation 01 natural sciences Compressible flow 010305 fluids & plasmas Physics::Fluid Dynamics Computational Mathematics 020303 mechanical engineering & transports 0203 mechanical engineering Thermal radiation 0103 physical sciences Heat transfer Diffusion (business) Boundary element method Analysis |
| Zdroj: | Engineering Analysis with Boundary Elements. 96:1-13 |
| ISSN: | 0955-7997 |
| DOI: | 10.1016/j.enganabound.2018.07.011 |
| Popis: | The objective of this article is to develop a boundary element numerical model to solve coupled problems involving heat energy diffusion, convection and radiation in a participating medium. Radiation is modelled using two approaches for optically thick fluids: the Rosseland diffusion approximation and the P 1 approximation. The governing Navier–Stokes equations are written in the velocity–vorticity formulation for the kinematics and kinetics of the fluid motion. The approximate numerical solution algorithm is based on boundary element numerical model in its macro-element formulation. The developed algorithm is validated by comparing results of radiative heat transfer for different optical thicknesses with benchmark data. Furthermore, the developed algorithm is tested by simulating natural convection and radiation heat transfer under large temperature differences where compressible flow solution is required. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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