论文部分内容阅读
为研究气体离心机取料支臂附近的流动状况,数值模拟了取料支臂附近的流场。采用矢量分裂的有限体积法求解不同出流条件下的N av ier-S tokes方程。采用二阶总变差减小原理,捕捉激波,同时将支臂外部和内部的流动结合起来进行计算。讨论了激波和气体粘性对流场的影响。得到了不同取料情况下的流场分布图像。结果表明:所采用的计算格式很好地捕捉到了激波和边界层,验证了计算方法的有效性,为数值模拟实际离心机支臂附近的流动状况和支臂损耗的计算打下了基础。
In order to study the flow conditions near the gas extraction arm of the gas centrifuge, the flow field near the material extraction arm is numerically simulated. The finite volume method of vector splitting is used to solve Navier-S tokes equations under different outflow conditions. The second-order total variation reduction principle is used to capture the shock wave and combine the external and internal flow of the arm together. The effects of shock and gas viscosity on the flow field are discussed. The flow field distribution images under different conditions were obtained. The results show that the proposed method can capture the shock wave and boundary layer well and validate the effectiveness of the method. This method can provide a basis for numerical simulation of flow conditions and arm loss near the support arm.