【摘要】 建立了弱可压缩的大涡模拟运动方程 ,采用弱可压缩流体运动方程作为控制方程 ,按照Deardorff的方法引入大涡模拟 ,利用Smagorinsky的亚格子紊动模型封闭水流运动方程组 ;进而对该守恒形式的方程进行求解 ,用有限体积法离散 ,用MaCormark显式预测—校正步进法计算。通过大涡模拟 ,得到了射流泵内部流动的流场分布、轴向压力和流速变化 ,为射流泵理论研究和优化设计提供了可靠依据更多还原

【Abstract】 The weakly compressible flow model and large eddy simulation method are applied to the two dimensional numerical calculation of flow in jet pump.By use of the large eddy simulation, the principle of operation of jet pump is analyzed. Distributions of the wall pressure and centerline velocity are obtained. All results gotten at this paper provide a reliable basis for theoretical study and optimal design of jet pump更多还原