轴流压气机三维流场数值模拟
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摘要
使用商业软件Numeca对某型轴流压气机进行三维数值模拟计算,采用Spalart-Allmaras湍流模型,运用隐式残差光顺法、多重网格法以及当地时间步长加速收敛技术缩短计算周期,得出了设计转速下的特性曲线,在此基础上进一步改变压气机出口参数来分析压气机叶轮发生失速喘振的原因,这对防止压气机失稳非常重要.然后对压气机内部流场进行了详细分析,得出了轴流压气机转子内部的流动参数分布规律,并指出造成压气机效率及压比损失的原因.
A certain type of axial compressor is numerically simulated by commercial software Numeca,which uses Spalart-Allmaras turbulence model,implicit residual smoothing method,multigrid method and local time step accelerating convergence technology to shorten compute period,so that to obtain the performance curves at design speed.Based on the simulation,the reason why compressor occurred surge and stall by changing the compressors outlet parameters is analysed,which is important to prevent the instability of the compressor.Then the internal flow field of compressor is analyzed in detail to get the distribution of the internal flow parameters of axial compressor and the reason why the efficiency and pressure lose is pointed out.
A certain type of axial compressor is numerically simulated by commercial software Numeca,which uses Spalart-Allmaras turbulence model,implicit residual smoothing method,multigrid method and local time step accelerating convergence technology to shorten compute period,so that to obtain the performance curves at design speed.Based on the simulation,the reason why compressor occurred surge and stall by changing the compressors outlet parameters is analysed,which is important to prevent the instability of the compressor.Then the internal flow field of compressor is analyzed in detail to get the distribution of the internal flow parameters of axial compressor and the reason why the efficiency and pressure lose is pointed out.
引文
[1]秦鹏.轴流压气机气动设计[M].北京:国防工业出版社,1975:1-50.
[2]高丽敏,刘海湖,刘波,等.多级轴流压气机全三维流动特性的数值研究[J].西北工业大学学报,2008,26(1):12-19.
[3]Denton J D.The calculation of three dimensional viscous flow through multistage turbo machines[J].Turbomachinery,1992,114(4):18-26.
[4]张士杰,袁新,叶大均.跨声速轴流压气机全工况三维流场数值分析[J].推进技术,2002,23(3):35-42.
[5]吴仲华.可压缩气体流过位于任意回转面上叶栅的解法和这种叶栅的设计方法[J].机械工程学报,1956,4(1):21-46.
[6]Wu C H.A general theory of three-dimensional flow in subsonic or supersonic turbomachineries of axial,radial and mixed-flow Types[R].NACA TN-2604,1952:1-90.
[7]马文生,顾春伟.多级轴流压气机内的流动机理研究[J].工程热物理学报,2007,28(S1):133-135.
[8]Rhie C M,Glexner A J,Spear D A,et al.Development application of a multistage Navier-Stokes solver:part I—Multistage modeling using body forces and deterministic stresses[J].ASME Journal of Turbomachinery,1998,120(2):205-214.
[9]苏欣荣,袁新.多级轴流压气机全工况特性预测[J].热力透平,2005,34(4):203-206.
[10]贾海军.轴流压气机跨声速三维流场数值模拟[D].西安:西北工业大学,工程热物理,2006.
[11]Jameson A,Schmidt W,Turkel E.Numerical solution of the Euler equations by finite volume methods using Runge-Kutta time stepping schemes[R].AIAA Paper 81-1259,1981.
[12]Jameson A,Yoon S.Multigrid solution of Euler equation using implicit schemes[R].AIAA Paper 85-0293,1985.
[2]高丽敏,刘海湖,刘波,等.多级轴流压气机全三维流动特性的数值研究[J].西北工业大学学报,2008,26(1):12-19.
[3]Denton J D.The calculation of three dimensional viscous flow through multistage turbo machines[J].Turbomachinery,1992,114(4):18-26.
[4]张士杰,袁新,叶大均.跨声速轴流压气机全工况三维流场数值分析[J].推进技术,2002,23(3):35-42.
[5]吴仲华.可压缩气体流过位于任意回转面上叶栅的解法和这种叶栅的设计方法[J].机械工程学报,1956,4(1):21-46.
[6]Wu C H.A general theory of three-dimensional flow in subsonic or supersonic turbomachineries of axial,radial and mixed-flow Types[R].NACA TN-2604,1952:1-90.
[7]马文生,顾春伟.多级轴流压气机内的流动机理研究[J].工程热物理学报,2007,28(S1):133-135.
[8]Rhie C M,Glexner A J,Spear D A,et al.Development application of a multistage Navier-Stokes solver:part I—Multistage modeling using body forces and deterministic stresses[J].ASME Journal of Turbomachinery,1998,120(2):205-214.
[9]苏欣荣,袁新.多级轴流压气机全工况特性预测[J].热力透平,2005,34(4):203-206.
[10]贾海军.轴流压气机跨声速三维流场数值模拟[D].西安:西北工业大学,工程热物理,2006.
[11]Jameson A,Schmidt W,Turkel E.Numerical solution of the Euler equations by finite volume methods using Runge-Kutta time stepping schemes[R].AIAA Paper 81-1259,1981.
[12]Jameson A,Yoon S.Multigrid solution of Euler equation using implicit schemes[R].AIAA Paper 85-0293,1985.