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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 46, 2004 - Issue 9
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Original Articles

AN ASSESSMENT OF k–ω AND v2f TURBULENCE MODELS FOR STRONGLY HEATED INTERNAL GAS FLOWS

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Pages 831-849 | Received 01 Mar 2004, Accepted 01 Jun 2004, Published online: 17 Aug 2010
 

Abstract

Both k ω and v 2 f turbulence models are used to model an axisymmetric, strongly heated, low-Mach-number gas flowing upward within a vertical tube in which forced convection is dominant. The heating rates are sufficiently high, so that fluid properties vary significantly in both the axial and radial directions; consequently, fully developed mean flow profiles do not evolve. Comparisons between computational results and experimental results, which exist in the literature, reveal that the v 2 f model performs quite well in predicting axial wall temperatures, and mean velocity and temperature profiles. This may be contrasted with the k ω model results, in which the wall heat transfer rates and near-wall velocities are significantly overpredicted.

Robert Spall and Adam Richards acknowledge support from the Inland Northwest Research Alliance (INRA) to pursue this research. The participation of Prof. Donald M. McEligot was partially supported by the U.S.-RoK I-NERI program under DOE Idaho Field Office Contract DE-AC07-99ID13727.

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