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本文应用改进的二维椭圆型通用程序对锥形扩压器流场作了计算。计算扩张角2(?)的范围为8°,12°,15.8°和16°,面积比AR 为1.5～9.0左右。计算中应用湍流的有效粘性模型和二方程k—ε模型。扩压器进口气流条件为无旋的,有旋的和轴向畸变的三种。计算结果与试验性能数据的比较是令人满意的。文中还对JT3D涡扇发动机的环形扩压器进行全流场的计算。本方法可提供设计复杂形状扩压器或其他流域的流场分析,性能预报和试验方案。
In this paper, a modified two-dimensional elliptic universal program was used to calculate the flow field of conical diffuser. The calculation of the expansion angle 2 (?) In the range of 8 °, 12 °, 15.8 ° and 16 °, the area ratio AR is about 1.5 to 9.0. Effective turbulent viscosity model and two-equation k-ε model are applied to the calculation. Diffuser inlet airflow conditions for non-rotating, rotating and axial distortion of the three. Comparisons between the calculated and experimental performance data are satisfactory. The article also JT3D turbofan engine circular diffuser full flow field calculations. This method provides flow field analysis, performance prediction, and experimental protocols for the design of complex shape diffusers or other watersheds.