2000 Volume 44 Pages 909-914
The experiments on the non-conservative inclined wall thermals using the mixture of water and nonuniform barium sulfate particles are carried out. The experimental results obtained may be compared with the numerical simulations. The new numerical model of an inclined wall thermal is proposed, in which the size distribution of solid particles is taken into account. The simulation model for inclined wall thermals of nonuiform suspended particles consists of the continuity equation, the mass conservation equation and the momentum equation. In the model, the dimensionless value α related to the entrainment coefficient Ew, and the form drag coefficient cD are chosen as parameters. Comparing the numerical calculation with experimental results of inclined thermals, likely values of α and CD are obtained.
