PREDICTION OF LOW REYNOLDS NUMBER TURBULENT WALL JETS AND PLUMES WITH AND WITHOUT BUOYANCY
Several low Reynolds number k-ε turbulence models are utilized to predict flows in turbulent wall jets. It is shown that the calculation results based on the Nagano and Hishida model are in the best agreement with experimental data. High Reynolds-number versions of the k-ε model together with wall damping corrections are also tested for comparison. The deficiencies in these models are noted. An extended Nagano and Hishida model which accounts for buoyancy is also applied to a vertical wall buoyant plume. It is shown that this modified model also performs well when buoyancy effects are included.