BY : CHAM Development Team - M R Malin

FOR : PHOENICS Validation of Turbulence Modelling Options

Two-dimensional turbulent buoyancy-driven flow in a tall rectangular cavity of 5:1 aspect ratio.
Rayleigh number of 4.E10.
Cartesian computational grid.
Turbulence represented via a buoyancy-extended version of the Lam-Bremhorst low-Reynolds-number k-e turbulence model.
Variable physical properties employed for the air flow.
Isothermal side walls and adiabatic horizontal walls.

NOTES :
The flow has been studied experimentally by Cheesewright et al [1986] and numerically by Davidson [1990].
The mesh employed is 56 by 56 using a high concentration of grid cells in the boundary layers on the vertical walls.
The vertical walls are isothermal with an imposed temperature difference of 45.8 degC, and the horizontal walls are adiabatic.
The calculation is based on the library case 296.
The calculation employs a temperature-dependent density, thermal conductivity and laminar viscosity.