摘要
概述了一种采用粘流/无粘流相互作用原理计算跨音速粘流的方法。采用熵修正激波算子计及跨越激波时的熵增,形成的非等熵位势方法可比传统的位势方法更准确地计算无粘流动。提出了一种流向速度型,结合其它辅助关系式导出了三维湍流边界层积分方程反方法。用此方法可求得粘流解。利用半反耦合方式耦合了无粘流和粘流解。数值算例表明,计算结果与实验结果吻合;且对计算机的要求较低。
A transonic viscous flow computational method is described by using viscous/inviscid interaction technique. A shock point operator is introduced to account for the entropy change a(?)ross the shock and a nonisentropic full potential method is formulated to allow a more accurate inviscid flow computation. A new streamwise velocity profile is proposed. Based on this profile and other auxiliary relationship, a three dimensional inverse integral compressible turbulent boundary layer method is for-mulated.The inviscid and viscous solution are coupled with semi-inverse scheme.The numerical results show that this viscous/inviscid interaction method is in good agreement with experimental data and requires less computer resources.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1991年第10期B483-B493,共11页
Acta Aeronautica et Astronautica Sinica
关键词
跨音速流
粘流
边界层
主控方程
transonic flow, boundary layer, noniseatropic flow.viscous/iaviseid inter- action
