Liu, F. and Wen, Jennifer X. (1999) Development and validation of an advanced turbulence model for buoyancy driven flows in enclosures. International Journal of Heat and Mass Transfer, Volume 42 (Number 21). pp. 3967-3981. doi:10.1016/S0017-9310(99)00073-3 ISSN 0017-9310.
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Abstract
A new buoyancy-modified turbulence model is developed on the basis of the four-equation model, k−ε−View the MathML source−εθ, of Hanjalic [K. Hanjalic, S. Kenjeres and F. Durst, Natural convection in partitioned two-dimensional enclosures at higher Rayleigh numbers, Int. J. Heat Mass Transfer 39(7) (1996) 1407–1427]. The strong anisotropy of Reynolds stresses due to buoyancy effects in the vertical boundary layers is considered by inclusion of the newly devised ‘return-to-isotropy’ concept in the pressure-strain correlation. The wall-reflection functions is also duly modified. The new model has been tested in buoyancy-driven cavity flows through comparison with published experimental data and the predictions from three other turbulence models [N. Z. Ince and B. E. Launder, On the computation of buoyancy-driven turbulent flows in rectangular enclosures, Int. J. Heat and Fluid Flow 10(2) (1998) 110–117; K. Hanjalic, S. Kenjeres and F. Durst, Natural convection in partitioned two-dimensional enclosures at higher Rayleigh numbers, Int. J. Heat Mass Transfer 39(7) (1996) 1407–1427]. It has demonstrated significant improvements in capturing the non-isotropy of Reynolds stresses and turbulent heat flux in vertical boundary layers.
| Item Type: | Journal Article |
|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering |
| Journal or Publication Title: | International Journal of Heat and Mass Transfer |
| Publisher: | Pergamon-Elsevier Science Ltd. |
| ISSN: | 0017-9310 |
| Official Date: | 1999 |
| Dates: | Date Event 1999 Published |
| Volume: | Volume 42 |
| Number: | Number 21 |
| Page Range: | pp. 3967-3981 |
| DOI: | 10.1016/S0017-9310(99)00073-3 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | https://wrap.warwick.ac.uk/56548/ |
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