自循环机匣处理轴向位置影响扩稳能力的机理
|
摘要
为了揭示自循环机匣处理轴向位置影响压气机稳定性的流动机理,采用非定常数值方法研究了3种不同轴向位置对机匣处理(CT)扩稳能力的影响,结果表明:机匣处理喷气装置离叶顶前缘最近且在叶顶前缘上游的扩稳能力最强,喷气装置在叶顶前缘正上方的次之,喷气装置在叶顶前缘上游较远处的最弱,对应机匣处理获得的综合失速裕度改进量分别为9.40%,7.09%,5.49%.通过详细地分析压气机叶顶流场表明:喷气装置离叶顶前缘最近且在叶顶前缘上游的机匣处理施加有利影响程度最高的范围刚好覆盖叶顶前缘处,此处是引起转子失速的关键部位,因此抑制叶顶间隙泄漏流造成的堵塞的效果最好,对应的扩稳能力在3种机匣处理中最强.
The unsteady numerical investigation of three kinds of self-recirculating casing treatments was performed to explore the mechanism of affecting the ability of improving compressor stall margin with changing axial position of casing treatment(CT).Results showed that the ability of improving stall margin was best when the injecting part of CT was close to the blade tip leading edge,and also located in upstream blade inlet.The ability became low by changing the axial position of CT to make the injecting part above the blade tip leading edge.It became lower by moving the injecting part away from the blade tip leading edge along upstream direction,and the corresponding stall margin improvement gained with three kinds of casing treatments was 9.40%,7.09% and 5.49% respectively.When the injecting part of CT was close to the blade tip leading edge,and located in upstream blade inlet,the level of positive effect created by CT was highest in the blade tip leading edge and the stall of rotor happened in this pivotal zone.Consequently the inlet blockage caused by the low energy tip clearance leakage flow was restrained most effectively,and the corresponding ability of increasing rotor stable operating range was highest among three kinds of casing treatments.
The unsteady numerical investigation of three kinds of self-recirculating casing treatments was performed to explore the mechanism of affecting the ability of improving compressor stall margin with changing axial position of casing treatment(CT).Results showed that the ability of improving stall margin was best when the injecting part of CT was close to the blade tip leading edge,and also located in upstream blade inlet.The ability became low by changing the axial position of CT to make the injecting part above the blade tip leading edge.It became lower by moving the injecting part away from the blade tip leading edge along upstream direction,and the corresponding stall margin improvement gained with three kinds of casing treatments was 9.40%,7.09% and 5.49% respectively.When the injecting part of CT was close to the blade tip leading edge,and located in upstream blade inlet,the level of positive effect created by CT was highest in the blade tip leading edge and the stall of rotor happened in this pivotal zone.Consequently the inlet blockage caused by the low energy tip clearance leakage flow was restrained most effectively,and the corresponding ability of increasing rotor stable operating range was highest among three kinds of casing treatments.
引文
[1]Vo H D,Tan C S,Greitzer E M.Criteria for spike initiated rotating stall[R].ASME Paper 2005-GT-68374,2005.
[2]Andrea R,Behnken R L,Murray R M.Rotating stall control of an axial flow compressor using pulsed air injection[J].Journal of Turbomachinery,1997,119(4):742-752.
[3]Leinhos D C,Scheidler S.Active stabilization of a low pressure compressor in a turbofan engine with constant air injection[R].AIAA-2001-3312,2001.
[4]Suder K L,Hathaway M D.Compersspor stability enhancement using discrete tip injection[R].ASME Paper2000-GT-650,2000.
[5]SHENG Chunhua,Remotigue M.Numerical simulations of Rotor 35with and without tip injection using an arbitrary Mach number flow solver[R].AIAA-2004-372,2004.
[6]徐纲,聂超群,黄伟光,等.低速轴流压气机顶部微量喷气控制失速机理的数值模拟[J].工程热物理学报,2004,25(1):136-140.XU Gang,NIE Chaoqun,HUANG Weiguang,et al.Numerical simulation of stall mechanism of low speed axial compressor by tip micro jet[J].Journal of Engineering Thermalphysics,2004,25(1):136-140.(in Chinese)
[7]卢新根,楚武利,朱俊强.定常微量喷气提高轴流压气机稳定工作裕度机理探讨[J].西北工业大学学报,2007,25(1):16-21.LU Xingen,CHU Wuli,ZHU Junqiang.Study on the mechanism of improving stability margin of axial flow compressor by steady micro jet[J].Journal of Northwestern Polytechnical University,2007,25(1):16-21.(in Chinese)
[8]Roy B,Veraarapu S.Stability enhancement and hysteresis improvement of axial flow fan by discrete and distributed tip injection schemes[R].ASME Paper 2008-GT-50075,2008.
[9]Hathaway M D.Self-recirculating casing treatment concept for enhanced compressor performance[R].ASME Paper2002-GT-30368,2002.
[10]Iyengar V,Sankar L N.Assessment of the self-recirculating casing treatment concept applied to axial compressors[R].AIAA-2005-0632,2005.
[11]Yang H,Nuernberger D,Nicke E,et al.Numerical investigation of casing treatment mechanisms with a conservative mixed-cell approach[R].ASME Paper 2003-GT-38483,2003.
[12]Strazisar A J,Bright M M.Compressor stall control through endwall recirculation[R].ASME Paper 2004-GT-54295,2004.
[13]Weichert S,Day I,Freeman C,et al.Self-regulating casing treatment for axial compressor stability enhancement[R].ASME Paper 2011-GT-46024,2011.
[14]张皓光,吴俊,楚武利,等.带自适用流通处理机匣的轴流压气机全通道数值研究[J].推进技术,2013,34(7):918-924.ZHANG Haoguang,WU Jun,CHU Wuli,et al.Full-annulus numerical investigation of axial flow compressor with self recirculation casing treatment[J].Journal of Propulsion Technology,2013,34(7):918-924.(in Chinese)
[15]张皓光,楚武利,吴艳辉,等.自适应流通机匣处理改善压气机性能的机理[J].推进技术,2010,31(3):301-308.ZHANG Haoguang,CHU Wuli,WU Yanhui,et al.Flow mechanisms of improving compressor performance through self recirculation casing treatment[J].Journal of Propulsion Technology,2010,31(3):301-308.(in Chinese)
[16]张皓光.轴流压气机机匣处理的试验与数值研究[D].西安:西北工业大学,2008.ZHANG Haoguang.Experimental and numerical study of axial flow compressor casing treatment[D].Xi’an:Northwestern Polytechnical University,2008.(in Chinese)
[2]Andrea R,Behnken R L,Murray R M.Rotating stall control of an axial flow compressor using pulsed air injection[J].Journal of Turbomachinery,1997,119(4):742-752.
[3]Leinhos D C,Scheidler S.Active stabilization of a low pressure compressor in a turbofan engine with constant air injection[R].AIAA-2001-3312,2001.
[4]Suder K L,Hathaway M D.Compersspor stability enhancement using discrete tip injection[R].ASME Paper2000-GT-650,2000.
[5]SHENG Chunhua,Remotigue M.Numerical simulations of Rotor 35with and without tip injection using an arbitrary Mach number flow solver[R].AIAA-2004-372,2004.
[6]徐纲,聂超群,黄伟光,等.低速轴流压气机顶部微量喷气控制失速机理的数值模拟[J].工程热物理学报,2004,25(1):136-140.XU Gang,NIE Chaoqun,HUANG Weiguang,et al.Numerical simulation of stall mechanism of low speed axial compressor by tip micro jet[J].Journal of Engineering Thermalphysics,2004,25(1):136-140.(in Chinese)
[7]卢新根,楚武利,朱俊强.定常微量喷气提高轴流压气机稳定工作裕度机理探讨[J].西北工业大学学报,2007,25(1):16-21.LU Xingen,CHU Wuli,ZHU Junqiang.Study on the mechanism of improving stability margin of axial flow compressor by steady micro jet[J].Journal of Northwestern Polytechnical University,2007,25(1):16-21.(in Chinese)
[8]Roy B,Veraarapu S.Stability enhancement and hysteresis improvement of axial flow fan by discrete and distributed tip injection schemes[R].ASME Paper 2008-GT-50075,2008.
[9]Hathaway M D.Self-recirculating casing treatment concept for enhanced compressor performance[R].ASME Paper2002-GT-30368,2002.
[10]Iyengar V,Sankar L N.Assessment of the self-recirculating casing treatment concept applied to axial compressors[R].AIAA-2005-0632,2005.
[11]Yang H,Nuernberger D,Nicke E,et al.Numerical investigation of casing treatment mechanisms with a conservative mixed-cell approach[R].ASME Paper 2003-GT-38483,2003.
[12]Strazisar A J,Bright M M.Compressor stall control through endwall recirculation[R].ASME Paper 2004-GT-54295,2004.
[13]Weichert S,Day I,Freeman C,et al.Self-regulating casing treatment for axial compressor stability enhancement[R].ASME Paper 2011-GT-46024,2011.
[14]张皓光,吴俊,楚武利,等.带自适用流通处理机匣的轴流压气机全通道数值研究[J].推进技术,2013,34(7):918-924.ZHANG Haoguang,WU Jun,CHU Wuli,et al.Full-annulus numerical investigation of axial flow compressor with self recirculation casing treatment[J].Journal of Propulsion Technology,2013,34(7):918-924.(in Chinese)
[15]张皓光,楚武利,吴艳辉,等.自适应流通机匣处理改善压气机性能的机理[J].推进技术,2010,31(3):301-308.ZHANG Haoguang,CHU Wuli,WU Yanhui,et al.Flow mechanisms of improving compressor performance through self recirculation casing treatment[J].Journal of Propulsion Technology,2010,31(3):301-308.(in Chinese)
[16]张皓光.轴流压气机机匣处理的试验与数值研究[D].西安:西北工业大学,2008.ZHANG Haoguang.Experimental and numerical study of axial flow compressor casing treatment[D].Xi’an:Northwestern Polytechnical University,2008.(in Chinese)