环形扩压通道内有旋绕流动的研究

On the Throughflow with Swirling Inflow in Annular Diffuser

1.
Shanghai University of Technology, Shanghai Applied Mathematics and Mechanics Institute, Shanghai;
2.
Chengdu Electrical Power Machine Works, Chengdu;
3.
Xi'an Jiaoiong University, Xi'an

摘要: 本文计算了环形截面的扩压通道内带进气旋绕的流动.在小横向流假定下.用三维边界层积分方程法求解内外壁面附近的流动.通过对子午面上与流线子午投影准正交方向的速度梯度方程和流量不变方程的迭代求解得出边界层外的势流场^[1].计算与实验结果基本符合.本研究可用于分析环形扩压器内带进气予旋的流动.
- 环形扩压通道 /
- 有旋绕流动 /
- 三维边界层 /
- 小横向流
Abstract: In this paper, a throughflow with swirling in flow in an annular diffuser is calculated. Under the assumption of small cross-flow, the flow near inner and outer wall surfaces is calculated based on the three-dimensional momentum integral equation of the boundary layer. The potential flow outside the boundary layer is computed by means of the iteration method based on the velocity gradient equation along the quasi-orthogonal direction of the meridional projection of the stream-line on the meridional surface and the constancy of flux equation^[1]. The numerical results agree with the experiments quite well. This method is useful for analyzing the through flow with pre-swirl in the annular diffuser.
- annular diffuser /
- swirling inflow /
- three-dimensional boundary layer /
- small cross-flow

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