摘要
该文推导了跨声速轴流式压气机的周向平均体积力模型,并在商用软件Ansys CFX上搭建了数值计算平台。该平台将代替叶片对流体作用力和做功量的周向体积力模型以源项的形式添加到Ansys CFX的三维控制方程中,发展形成了一种更加高速有效的压气机进气畸变数值计算方法。采用该计算方法进行NASA Stage 37单级跨声速压气机全流道模拟,计算了在70%设计转速、均匀进气工况下的压气机性能特性和流场分布,并与实验结果进行对比分析。结果表明,两者能很好地吻合一致,验证了计算方法的可行性和计算结果的准确性。在此基础上,采用该计算方法对该压气机在周向进气畸变条件下的性能和流场进行了预测,模拟结果也很好地反映了畸变来流对压气机特性的影响。
In this paper,the circumferential average body force model for the transonic axial flow compressor is derived,and numerical computing platform is built based on the commercial software ANSYS CFX.The body force model is added to the ANSYS CFX three-dimensional control equations in form of source terms,and a more efficient and effective compressor inlet distortion numerical calculation method is developed.Then the full flow channel of the NASA Stage 37 transonic single-stage compressor is simulated by using this method,and the compressor performance characteristics and flow field distribution at 70%design speed and uniform intake condition are calculated.The performance characteristics and the flow field distribution of the calculation results agree well with the experimental results,indicating that the method is feasible and correct.Then,the performance and flow fields of the compressor under circumferential intake distortion condition are predicted by this method,and the simulation results show the influences of the inlet distortion on the compressor performance accurately.
作者
刘震雄
刁恒之
LIU Zhen-xiong;DIAO Heng-zhi(Shanghai Civil Aviation College,Shanghai 200232,China;Institute of Engineering Thermophysics,School of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《机械研究与应用》
2023年第5期20-24,28,共6页
Mechanical Research & Application
