考虑径向掺混的轴流压气机通流彻体力模型计算及验证
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摘要
为研究考虑径向掺混对通流计算结果的影响,在通流彻体力模型中引入径向掺混项,并以某型低速轴流压气机为算例开展了有无径向掺混对通流计算结果的影响分析。结果表明:在落后角和损失系数相同时,径向掺混模型的加入使叶排出口气流参数沿径向的分布更加均匀;模型对于压气机后面级端壁区流动参数展向分布的预估更加准确。通过与该台压气机试验测量数据的对比,验证了本模型的可靠性。
In order to study the effect of radial mixing on the calculation results of through-flow,the radial mixing term was introduced into the through-flow force model. Taking a low speed axial compressor as an example,the effect of radial mixing and no radial mixing on the through-flow calculation results were analyzed. The results show that the radial mixing model can make the distribution of air flow parameters of blade rows outlet along the radial direction more uniform when the deviation angle and loss coefficient are the same. The model is more accurate for predicting the spreading direction distribution of flow parameters in the end wall of the stage in the compressor.The reliability of the model is verified by comparing the measured data with that of the compressor.
In order to study the effect of radial mixing on the calculation results of through-flow,the radial mixing term was introduced into the through-flow force model. Taking a low speed axial compressor as an example,the effect of radial mixing and no radial mixing on the through-flow calculation results were analyzed. The results show that the radial mixing model can make the distribution of air flow parameters of blade rows outlet along the radial direction more uniform when the deviation angle and loss coefficient are the same. The model is more accurate for predicting the spreading direction distribution of flow parameters in the end wall of the stage in the compressor.The reliability of the model is verified by comparing the measured data with that of the compressor.
引文
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[2]Mc Kenzie A B.Initial tests on the four stage experimental compressor[J].Proc Inst Mech Eng,1981,194:103-111.
[3]Cumpsty N A.Annulus wall boundary-layer measurements in a four-stage compressor[J].ASME Journal of Engineering for Gas Turbines and Power,1986,108(1):2-6.
[4]Howard M A,Ivey P C,Barton J P.Endwall effects at two tip clearances in a multistage axial-flow compressor with controlled diffusion blading[J].ASME Journal of Turbomachinery,1994,106:635-647.
[5]Khalid S A,Khalsa A S,Waitz I A.et al.Endwall blockage in axial compressors[J].ASME J.Turbomach.1999,121(3):499-509.
[6]Horlock J H.Secondary flow in repeating stages of axial turbomachines[J].Proc IMech E,Part A:J Power and Engrgy 1995,209(2):101-110.
[7]Adkins G G,Smith L H.Spanwise mixing in axial-flow turbomachines[J].ASME Journal of Engineering for Power,1982,104(1):97-110.
[8]Gallimore S J.Spanwise mixing in multistage axial flow compressors:Part I-Experimental investigations[J].Trans.ASME J.of Turbomachinery,1986,108(1):10-16.
[9]Gallimore S J.Spanwise mixing in multistage axial flow compressors.Part II-Throughflow calculations including mixing[J].Trans.ASME J of Turbomachinery,1986,108(1):10-16.
[10]Leylek J H,Wisler D C.Mixing in axial-flow compressors:conclusions drawn from 3-D Navier-Stokes analyses and experiments[J].Journal of Turbomachinery,1990,113(2):157.
[11]JIN Guo,JUN Hu.A three-dimensional computational model for inlet distortion in fan and compressor[J].Proc IMech E,Part A:JPower and Energy,2018,232(2):144-156.
[12]Marble F E.Three-dimensional flow in turbomachines,aerodynamics of turbines and compressors[M].Princeton:Princeton University Press,1964:10-20.
[13]陈懋章.粘性流体动力学基础[M].北京:高等教育出版社,2002:34-45.Chen Maozhang.Fundamentals of viscous fluid dynamics[M].Beijing:Higher Education Press,2002:34-35.(in Chinese)
[14]王佳宇,胡骏.非同时测量的压气机试验数据转换方法研究[C]//第十九届叶轮机专业学术交流会.长沙:中国航空学会动力分会叶轮机专业会员会,2018:469-474.WANG Jiayu,HU Jun.The study of the conversion of unsimultaneous compressor test data[C]//Nineteenth Academic Symposium on Turbine Machinery.Changsha:Professional Membership Association of Turbine Engines of China Aviation Society Power Branch,2018:469-474.(in Chinese)
[15]Koch C C.Stalling pressure rise capability of axial flow compressor stages[J].ASME Journal of Engineering for Gas Turbines and Power,1981,103(4):645-656.