周力行a; 杨玟a; 廉春英a; L. S. Fanb; D. J. Leeb
ZHOU Lixinga; YANG Mina; LIAN Chnyinga; L. S. Fanb; D. J. Leeb
摘要: A full second-order moment (FSM) model and an algebraic stress (ASM) two-phase turbulence
modelare proposed and applied to predict turbulent bubble-liquid flows in a 2D rectangular
bubble column. Predictiongives the bubble and liquid velocities, bubble volume fraction,
bubble and liquid Reynolds stresses and bubble-liquidvelocity correlation. For predicted
two-phase velocities and bubble volume fraction there is only slight differencebetween
these two models, and the simulation results using both two models are in good agreement
with the particleimage velocimetry (PIV) measurements. Although the predicted two-phase
Reynolds stresses using the FSM are insomewhat better agreement with the PIV measurements
than those predicted using the ASM, the Reynolds stressespredicted using both two models
are in general agreement with the experiments. Therefore, it is suggested to usethe ASM
two-phase turbulence model in engineering application for saving the computation time.