摘要
采用CFD方法,研究超音速流动条件下三维非矩形空腔7种构型的流动特性。结果表明:单纯空腔的回流速度和壁面附近动压都较大,在空腔前缘布置尖楔和凹槽都对流动产生了明显的控制作用,合适的尖楔和凹槽参数匹配可减小空腔回流速度、空腔壁面附近动压。相对于前缘尖楔,前缘凹槽对空腔流动的控制效果更好。
We use the CFD method to study the flow characteristic of 3D non-rectangle cavity. Seven models are simulated at supersonic flow. The results show that a cavity without wedge and groove has bigger reverse flow velocity and dynamic pressure near the wall of the cavity. Both wedge and groove disposed at the leading edge of the cavity have an obvious control function; appropriate parameter matching of wedge and groove can reduce reverse flow velocity and dynamic pressure near the wall of the cavity. Groove disposed at the leading edge has better control effect as compared with the wedge.
出处
《机械科学与技术》
CSCD
北大核心
2010年第8期1031-1034,共4页
Mechanical Science and Technology for Aerospace Engineering
