局部/组合抽吸对压气机叶栅分离流动控制的机理研究
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摘要
为了研究不同抽吸形式对压气机内部分离流动的控制效果和机理,基于数值模拟方法,对内部同时存在角区分离和附面层分离的直列叶栅进行抽吸计算,共设置8套不同的方案进行了详细的探究。结果表明:对于控制分离的效果和机理,不同抽吸形式之间存在着一定差异;在分离发展的不同阶段,实施抽吸对其控制效果也有所不同。近端壁吸力面抽吸方案SS3同时减小了角区分离和近端壁处的尾缘附面层分离,尾部近吸力面沿展向静压分布为正"C"型,使角区内的低能流体向叶中流动,角区流动得到改善,但导致叶展中部流场的恶化;端壁抽吸和全叶高组合抽吸则使尾部近吸力面静压沿展向分布更均匀,低能流体的迁移现象减弱。基于以上结果可得:组合抽吸可以更有效地控制叶栅内部流动分离,降低损失,提高叶栅流通能力。
To explore the effectiveness and mechanisms of different forms of boundary layer suction(BLS)in controlling the separations in compressors,a linear compressor cascade,with separated flows on the wholespan and three-dimensional separations over end wall corner,was researched based on the numerical simulationmethod. A total of eight suction schemes were set up. And the results show as follows:The effectiveness andmechanisms for flow separation control are different for different suction schemes,the control effectiveness is alsodifferent for the implement of suction at different development stages of separation. The separation at the suctionsurface and corner are reduced simultaneously under the control of suction scheme SS3 on suction surface nearend wall,and the‘C'shape span-wise distribution of static pressure at the trailing edge near the suction surfaceprompts the transport of the low-energy fluid near the end wall to the mid-span which leads to the deterioration ofthe flow field near the mid-span. However,the span-wise distribution of static pressure is more uniform underthe control of end wall suction and full span combined suction schemes resulting in the reduction of the transportof the low-energy fluid near the end wall to the mid-span. Based on these results,it can be seen clearly that com-bined BLS can more effectively control the flow separation inside the cascade,reduce the cascade loss and improve the flow capacity.
To explore the effectiveness and mechanisms of different forms of boundary layer suction(BLS)in controlling the separations in compressors,a linear compressor cascade,with separated flows on the wholespan and three-dimensional separations over end wall corner,was researched based on the numerical simulationmethod. A total of eight suction schemes were set up. And the results show as follows:The effectiveness andmechanisms for flow separation control are different for different suction schemes,the control effectiveness is alsodifferent for the implement of suction at different development stages of separation. The separation at the suctionsurface and corner are reduced simultaneously under the control of suction scheme SS3 on suction surface nearend wall,and the‘C'shape span-wise distribution of static pressure at the trailing edge near the suction surfaceprompts the transport of the low-energy fluid near the end wall to the mid-span which leads to the deterioration ofthe flow field near the mid-span. However,the span-wise distribution of static pressure is more uniform underthe control of end wall suction and full span combined suction schemes resulting in the reduction of the transportof the low-energy fluid near the end wall to the mid-span. Based on these results,it can be seen clearly that com-bined BLS can more effectively control the flow separation inside the cascade,reduce the cascade loss and improve the flow capacity.
引文
[1] Gbadebo S A,Cumpsty N A,Hynes T P. Three-Dimensional Separations in Axial Compressors[J]. Journal of Turbomachinery,2005,127(2):457-469.
[2] Hah C,Loellbach J. Development of Hub Corner Stall and Its Influence on the Performance of Axial Compressor Blade Rows[J]. Journal of Turbomachinery,1999,121(1):67-77.
[3]曹志远.附面层抽吸对轴流压气机流动控制及性能影响的研究[D].西安,西北工业大学,2014.
[4] Kerrebrock J L,Reijnen D P,Ziminsky W S,et al. Aspirated Compressors[R]. ASME 97-GT-525.
[5] Kerrebrock J L. The Prospects for Aspirated Compressors[R]. AIAA 2000-2472.
[6] Merchant A. Aerodynamic Design and Performance of Aspirated Airfoils[J]. Journal of Turbomachinery,2003,125(1):141-148.
[7] Dang T Q,Van Rooij M P C,Larosiliere L M. Design of Aspirated Compressor Blades Using Three-Dimensional Inverse Method[R]. ASME GT 2003-30369.
[8] Peacock R E. Boundary-Layer Suction to Eliminate Corner Separation in Cascades of Aerofoils[M]. British:H M Stationery Office,1971.
[9] Gbadebo S A,Cumpsty N A,Hynes T P. Control of Three-Dimensional Separations in Axial Compressors by Tailored Boundary Layer[J]. ASME Journal of Turbomachinery,2007,130(1).
[10]王松涛,潜纪儒,冯国泰,等.壁面吸气抑制分离减少流动损失的研究[J].工程热物理学报,2006,27(1):48-50.
[11]张华良,王松涛,王仲奇.端壁附面层抽吸对扩压叶栅内分离结构的影响[J].热能动力工程,2006,21(6):565-568.
[12]史磊,刘波,曹志远,等.高亚声速吸附式叶栅气动特性实验研究[J].推进技术,2012,33(5):591-596.(SHI Lei,LIU Bo,CAO Zhi-yuan,et al. Experimental Research on Performance of High Subsonic Aspirated Cascade[J]. Journal of Propulsion Technology,2012,33(5):591-596.)
[13]王掩刚,牛楠,赵龙波,等.端壁抽吸位置对压气机叶栅角区分离控制的影响[J].推进技术,2010,31(4):433-437.(WANG Yan-gang,NIU Nan,ZHAO Long-bo,et al. Effect on Corner Separation Control for High Load Compressor Cascade with Different End-Wall BLS Position[J]. Journal of Propulsion Technology,2010,31(4):433-437.)
[14]郭爽,陈绍文,陆华伟,等.组合抽吸对大转角扩压叶栅性能的影响[J].航空动力学报,2010,25(12):2697-2702
[15]陈绍文,郭爽,宋宇飞,等.局部附面层抽吸对高负荷扩压叶栅流动特性影响[J].工程热物理学报,2010,31(3):407-410
[16] Mao Xiao-chen,Liu Bo,Rehman Abdul et. al. Numerical Investigation into the Effects of Casing Aspiration on the Overall Performance and Flow Unsteadiness in a Counter-Rotating Axial Flow Compressor[J]. Aerospace Science and Technology,2018,78:671-681.
[17] Mao Xiao-chen,Liu Bo,Tang Tian-quan. Control of Tip Leakage Flow in Axial Flow Compressor Cascade by Suction on the Blade Tip[J]. Journal of Applied Fluid Mechanics,2018,11(1):137-149.
[18] Mao Xiao-chen,Liu Bo,Tang Tian-quan. Effect of Casing Aspiration on the Tip Leakage Flow in the Axial Flow Compressor Cascade[J]. IMechE:Journal of Power and Energy,2017,232(3).
[19] Cao Zhi-Yuan,Liu Bo,Zhang Ting. Influence of Endwall Boundary Layer Suction on the Flow Fields of a Critically Loaded Diffusion Cascade[J]. Chinese Journal of Mechanical Engineering,2018,31(1).
[20] Cao Zhi-yuan,Liu Bo,Zhang Ting,et al. Influence of Coupled Boundary Layer Suction and Bowed Blade on Flow Field and Performance of a Diffusion Cascade[J].Chinese Journal of Aeronautics,2017,30(1):249-263.
[21]茅晓晨,刘波,曹志远,等.端壁射流对压气机叶栅角区分离控制的研究[J].推进技术,2014,35(12):1615-1622.(MAO Xiao-chen,LIU Bo,CAO Zhi-yuan,et al. Research on Corner Separation Control for Compressor Cascade with End-Wall Jet Flow[J].Journal of Propulsion Technology,2014,35(12):1615-1622.)
[22] Cao Zhi-yuan,Liu Bo,Zhang Ting. Control of Separations in a Highly Loaded Diffusion Cascade by Tailored Boundary Layer Suction[J]. Journal of Mechanical Engineering Science,2014,228(8):1363-1374.
[2] Hah C,Loellbach J. Development of Hub Corner Stall and Its Influence on the Performance of Axial Compressor Blade Rows[J]. Journal of Turbomachinery,1999,121(1):67-77.
[3]曹志远.附面层抽吸对轴流压气机流动控制及性能影响的研究[D].西安,西北工业大学,2014.
[4] Kerrebrock J L,Reijnen D P,Ziminsky W S,et al. Aspirated Compressors[R]. ASME 97-GT-525.
[5] Kerrebrock J L. The Prospects for Aspirated Compressors[R]. AIAA 2000-2472.
[6] Merchant A. Aerodynamic Design and Performance of Aspirated Airfoils[J]. Journal of Turbomachinery,2003,125(1):141-148.
[7] Dang T Q,Van Rooij M P C,Larosiliere L M. Design of Aspirated Compressor Blades Using Three-Dimensional Inverse Method[R]. ASME GT 2003-30369.
[8] Peacock R E. Boundary-Layer Suction to Eliminate Corner Separation in Cascades of Aerofoils[M]. British:H M Stationery Office,1971.
[9] Gbadebo S A,Cumpsty N A,Hynes T P. Control of Three-Dimensional Separations in Axial Compressors by Tailored Boundary Layer[J]. ASME Journal of Turbomachinery,2007,130(1).
[10]王松涛,潜纪儒,冯国泰,等.壁面吸气抑制分离减少流动损失的研究[J].工程热物理学报,2006,27(1):48-50.
[11]张华良,王松涛,王仲奇.端壁附面层抽吸对扩压叶栅内分离结构的影响[J].热能动力工程,2006,21(6):565-568.
[12]史磊,刘波,曹志远,等.高亚声速吸附式叶栅气动特性实验研究[J].推进技术,2012,33(5):591-596.(SHI Lei,LIU Bo,CAO Zhi-yuan,et al. Experimental Research on Performance of High Subsonic Aspirated Cascade[J]. Journal of Propulsion Technology,2012,33(5):591-596.)
[13]王掩刚,牛楠,赵龙波,等.端壁抽吸位置对压气机叶栅角区分离控制的影响[J].推进技术,2010,31(4):433-437.(WANG Yan-gang,NIU Nan,ZHAO Long-bo,et al. Effect on Corner Separation Control for High Load Compressor Cascade with Different End-Wall BLS Position[J]. Journal of Propulsion Technology,2010,31(4):433-437.)
[14]郭爽,陈绍文,陆华伟,等.组合抽吸对大转角扩压叶栅性能的影响[J].航空动力学报,2010,25(12):2697-2702
[15]陈绍文,郭爽,宋宇飞,等.局部附面层抽吸对高负荷扩压叶栅流动特性影响[J].工程热物理学报,2010,31(3):407-410
[16] Mao Xiao-chen,Liu Bo,Rehman Abdul et. al. Numerical Investigation into the Effects of Casing Aspiration on the Overall Performance and Flow Unsteadiness in a Counter-Rotating Axial Flow Compressor[J]. Aerospace Science and Technology,2018,78:671-681.
[17] Mao Xiao-chen,Liu Bo,Tang Tian-quan. Control of Tip Leakage Flow in Axial Flow Compressor Cascade by Suction on the Blade Tip[J]. Journal of Applied Fluid Mechanics,2018,11(1):137-149.
[18] Mao Xiao-chen,Liu Bo,Tang Tian-quan. Effect of Casing Aspiration on the Tip Leakage Flow in the Axial Flow Compressor Cascade[J]. IMechE:Journal of Power and Energy,2017,232(3).
[19] Cao Zhi-Yuan,Liu Bo,Zhang Ting. Influence of Endwall Boundary Layer Suction on the Flow Fields of a Critically Loaded Diffusion Cascade[J]. Chinese Journal of Mechanical Engineering,2018,31(1).
[20] Cao Zhi-yuan,Liu Bo,Zhang Ting,et al. Influence of Coupled Boundary Layer Suction and Bowed Blade on Flow Field and Performance of a Diffusion Cascade[J].Chinese Journal of Aeronautics,2017,30(1):249-263.
[21]茅晓晨,刘波,曹志远,等.端壁射流对压气机叶栅角区分离控制的研究[J].推进技术,2014,35(12):1615-1622.(MAO Xiao-chen,LIU Bo,CAO Zhi-yuan,et al. Research on Corner Separation Control for Compressor Cascade with End-Wall Jet Flow[J].Journal of Propulsion Technology,2014,35(12):1615-1622.)
[22] Cao Zhi-yuan,Liu Bo,Zhang Ting. Control of Separations in a Highly Loaded Diffusion Cascade by Tailored Boundary Layer Suction[J]. Journal of Mechanical Engineering Science,2014,228(8):1363-1374.
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