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Test of several versions for the k-epsilon type turbulence modelling of internal mixed convection flows.

Author(s) : COSTA J. J., OLIVEIRA L. A., BLAY D.

Type of article: Article

Summary

The problem of confined, mixed convection airflow generated by two non-isothermal plane wall jets was investigated numerically and experimentally. Measurements of the velocity and temperature fields in a 1 x 1 m2 cross-section cavity are reported. Eight low-Reynolds-number k-epsilon turbulence models were comparatively tested, together with a simplified version of the two-layer wall-function model of Chieng and Launder. Particular attention was given to the mean and turbulent quantities across the wall jet flows, and to the evaluation of the wall heat transfer. The low-Re model of Nagano and Hishida provided satisfactory results, which were further improved with two further modifications.

Details

  • Original title: Test of several versions for the k-epsilon type turbulence modelling of internal mixed convection flows.
  • Record ID : 2001-0057
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 42 - n. 23
  • Publication date: 1999/12

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