摘要
为研究气体离心机中取料支臂附近的流动状况,采用矢量分裂的有限体积法求解不同出流条件下的Euler方程。为了更好的捕捉激波,计算中采用二阶TVD(totalvariationdiminishing)原理。将支臂外部和内部的流动结合起来进行计算,主要讨论不同的工作状况是如何影响流场,特别是如何影响激波形状的。计算得到了不同工况下的流场分布图像。计算结果表明:不同的工况对流场的分布有很大的影响。当没有取料时,支臂前方形成强的脱体激波;随着背压的减小,激波的位置将向下游移动,在取料管内部形成激波;最终激波将在流场内消失,转变成弱的附着激波。
The Euler equation was solved for different outflow conditions using vector splitting in the finite volume method to study the flow around the scoops in a gas centrifuge. The second order total variation diminishing (TVD) scheme was adopted to efficiently capture the shock. The flow fields inside and outside the scoops were calculated for different working conditions to analyze the influence of the working conditions on the whole field, especially the shock shape. A strong detached shock formed in front of the scoops when the scoops outlet was closed, but moved downstream into the scoops as the pressure decreased. The shock finally changed to a weak attached shock when the outlet was opened.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第12期1586-1589,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"九五"科技攻关项目(95-219-01-01)
