摘要
阐述了二维弱可压缩流体流动控制方程和大涡模拟湍流模型.基于该模型对射流泵各种运行工况进行了一系列数值模拟计算.计算中模拟了异常边界条件下射流泵的流场特性,重点模拟喷嘴出口回流旋涡并给出了可视化描述.对不同计算网格数和大涡模拟系数对计算结果的影响也作了论述.提出的网格生成和数值模拟方法具有较高的效率,计算结果可靠.
The weakly compressible fluid control equations and the large eddy simulation turbulence model are expounded. Based on the model, a series of numerical simulation calculations have been carried out for a jet pump working under various operating conditions. The calculations have simulated the flow field property of the jet pump under the unusual boundary condition, especially simulated the backflow whirlpool near to the spray nozzle export, and give out videotext description. Other factors which influence the calculation result for different calculation grid number and large eddy simulation coefficient have also been discussed. The mesh making and simulation method proposed have higher efficiency.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2007年第2期110-114,共5页
Engineering Journal of Wuhan University
关键词
数值模拟
湍流模型
大涡模拟
射流泵
numerical simulation
turbulence model
large eddy simulation
jet pump
