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应用湍流Reynold应力输运方程模型 (DSM)对液 液旋流分离管中的强旋湍流进行了数值模拟 ,并与LDV测量结果进行了比较 ,结果表明 :DSM模型不仅较合理地预报出了切向速度的Rankine涡结构及其位置 ,而且揭示了液 液旋流管中切向速度所特有的双峰分布现象 ;对轴向速度预报给出了近壁下行流、近轴上行流以及介于两者之间的零速区等 ;湍流动能在旋流管中的变化为上游近壁大、中部近轴大和下游近似均布 .旋流管中的静压则呈近轴小近壁大、上游小下游大的分布 ;除个别区域外 ,以上数值预报结果与相同条件下的激光Doppler诊断结果 ,无论在定性上还是定量上均吻合良好 .
The turbulent Reynold stress transport equation model (DSM) was used to simulate the strong turbulent flow in the liquid-liquid cyclone and to compare with the results of LDV measurements. The results show that the DSM model can not only predict the The Rankine vortex structure and its position to the velocity, and reveals the bimodal distribution characteristic of the tangential velocity in the liquid-liquid cyclone tube. For the axial velocity prediction, the near-wall downflow, paraxial upflow, Turbulent kinetic energy in the hydrocyclone changes in the upstream wall is large, the middle of the paraxial large and downstream approximately uniform. The hydrostatic pressure in the cyclone tube is a small paraxial wall, In addition to some regions, the above numerical prediction results are in good agreement with the laser Doppler diagnostic results under the same conditions, both qualitatively and quantitatively.