本文采用Marini-Quarteroni的不重叠区域分解算法和“镶嵌”式间隙网格技术, 开发了可计算叶顶间隙流场的N-S方程求解程序。通过计算结果同实验显示结果的比较表明，本文的计算方法不仅可以很好地描述叶顶间隙流动的细节，而且在复杂区域流场计算中是非常有效的。本文指出在叶栅存在间隙时，前缘产生什么样的拓扑结构不仅取决于相对间隙的大小，同时也取决于叶栅的负荷情况。
In this paper, th author presented an embedded H-grid method and a domain decomposition method to calculate cascade flow field with tip clearance. Comparing the calculation result with experimental data derived from wind tunnel, it is indicated that the computational result were in good agreement with experimental data. It is also pointed out that the topological structure near leading edge depended on not only the gap size but also loading of cascade and thickness of inlet boundary layer.
参考文献
| [1] | 王松涛;袁宁;王仲奇 等.具有TVD性质的三阶精度GODUNOV格式在粘性流场计算中的应用[J].工程热物理学报,1999,20(03):299-303. |
| [2] | Baldwin B;Lomax H .Thin Layer Appromination and Algerbraic Model for Separated Turbulent Flows[R].AIAA Paper 78-257,1978. |
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