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TRANSIENT SIMULATION OF RADIATING FLOWS

DOI: 10.1615/ICHMT.2004.RAD-4.320
10 pages

Nevin Selcuk
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Ahmet B. Uygur
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Isil Ayranci
Department of Chemical Engineering, Middle East Technical University, 06531 Ankara, TURKEY; Centre de Thermique de Lyon (CETHIL CNRS-INSA Lyon-UCBL), Bât. Sadi Carnot, INSA-Lyon, F-69621, France

Tanil Tarhan
Chemical Engineering Department, Middle East Technical University, 06531 Ankara, Turkey

Аннотация

Time-dependent Navier-Stokes equations are solved in conjunction with the radiative transfer equation by coupling a previously developed direct numerical simulation based computational fluid dynamics code to an existing radiation code, both based on the method of lines approach. The temperature profiles predicted by the coupled code are validated against steady-state solutions available in the literature for laminar, axisymmetric, hydrodynamically developed flow of a gray, absorbing, emitting fluid in a heated pipe. Favorable comparisons show the predictive accuracy and reliability of the coupling strategy employed. Transient solutions for a more realistic heat transfer problem are also demonstrated for simultaneous hydrodynamic and thermal development.

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