TITLE : TURBULENT BUOYANCY-DRIVEN CAVITY FLOW
BY : CHAM Development Team - M R Malin
FOR : PHOENICS Validation of Turbulence Modelling Options
DATE : 1995 PHOENICS Version : 2.1.1
- 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.
- The flow has been studied experimentally by Cheesewright et al
 and numerically by Davidson .
- 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.
Velocity vectors (m/s)
Temperature contours (Deg K)
Measured and predicted vertical velocity profiles at y/H=0.5
Measured and predicted turbulence energy profiles at y/H=0.5