【摘要】 作为跨声速轴流压气机研究计划中的一个部份,使用双焦点激光测速仪测量了转子上下游及转子通道内的流场,同时进行三元流分析计算并与测量结果进行比较.本文着重介绍所采用的三元分析计算方法.它以激光测量的出口绝对气流角分布,常规测量的出口总压分布及扭矩测量得到的转子效率作为计算的输入参数,从而得到转子内部的详细流动.在部分转速下的计算结果与测量结果是相当接近的.更多还原

【Abstract】 As a part of basic research program to increase the understanging of the internal flow In high subsonic and transonic flow compressors and to improve the design and analysis calculation methods. Laser-2-Focus velocimeter has been employed in measuring the velocity and the flow angles in a compressor rotor running at peak-effeciency points of several partial design speed. Three-dimensional flow calculation has aJso been undertaken for this off design conditions. The outlet velocity measured by L-2-F velocimeter. Outlet stagnation pressure measured by pilot tubes and isentropic rotor efficiency measured by phase difference torquementer are used as input values to the theoretical calculation. The variation of flow on the S2m surface and on the S1 surfaces measured by L-2-F velocimeter, is general, agrees reasonably well with the calculated variation. This indicates that the three-dimensional calculation method used can give a-good picture of the internal flow in the compressor rotor.更多还原