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Numerical Modeling of Strongly Heated Internal Gas Flows

[+] Author Affiliations
Robert E. Spall, Adam Richards

Utah State University, Logan, UT

Donald M. McEligot

Idaho National Engineering and Environmental Engineering Laboratory, Idaho Falls, ID

Paper No. HT-FED2004-56107, pp. 257-262; 6 pages
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 2, Parts A and B
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4691-1 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME


The v2 –f turbulence model was used to model an axisymmetric, strongly heated, low Mach number gas flowing upward within a vertical tube in which forced convection was dominant. The heating rates were sufficiently high so that fluid properties varied significantly in both axial and radial directions; consequently, fully developed mean flow profiles did not evolve. Results using both constant and variable turbulent Prandtl number approximations in the energy equation were obtained. Comparisons between computational results, and experimental results which exist in the literature, revealed that the v2 –f model performed quite well in predicting axial wall temperatures, and mean velocity and temperature profiles. This result may be contrasted with most two-equation model results appearing in the literature for which the wall heat transfer rates are significantly over predicted.

Copyright © 2004 by ASME



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