张国路迢,王江峰,娄聚伟,郭雨旻,赵攀

• 1:西安交通大学能源与动力工程学院

摘要(Abstract)：

为了分析半高叶片扩压器内的流动机理，进一步提升半高叶片扩压器的工作性能，研究了离心压缩机中不同叶高、位置的半高叶片扩压器内的流动特性，提出了斜半高叶片扩压器，研究了斜半高叶片扩压器在发生旋转失速时流动特性。采用了三维计算流体动力学(CFD)方法对使用不同扩压器的离心压缩机在稳态和瞬态条件下进行了全周全工况数值模拟。研究结果表明：在设计工况下，斜半高叶片扩压器相较于半高叶片扩压器，当安装在轮盘侧时，总静压比提升了3.80%,总静等熵效率提升了2.74%,当安装在轮盖侧时，总静压比、总静等熵效率分别提升了0.82%、2.11%;旋转失速时的研究表明，斜半高扩压器叶片叶顶间隙流动能够在发生旋转失速时耗散静压波动能量，将扩压器内静压波动从最大约50 kPa降低至了约10 kPa。所提斜半高叶片扩压器作为新型的扩压器类型，性能优于半高叶片扩压器，具备广阔的应用前景，对旋转失速时的流动研究结果能够扩压器叶片叶顶间隙流动研究提供重要参考。

关键词(KeyWords)： 离心压缩机;半高叶片扩压器;计算流体动力学;失速

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目（51976147）

作者(Author): 张国路迢,王江峰,娄聚伟,郭雨旻,赵攀

参考文献(References)：

• [1] YOSHINAGA Y,KANEKI T,KOBAYASHI H,et al.A study of performance improvement for high specific speed centrifugal compressors by using diffusers with half guide vanes [J].Journal of Fluids Engineering,1987,109(4):359-366.
• [2] 陆华伟，张永超，康达，等.具有叶顶间隙扩压叶栅附面层抽吸研究 [J].工程热物理学报，2016,37(2):277-284.LU Huawei,ZHANG Yongchao,KANG Da,et al.Investigation of boundary layer suction on compressor cascade with tip clearance [J].Journal of Engineering Thermophysics,2016,37(2):277-284.
• [3] 高丽敏，刘思余，李永增，等.扩压叶栅叶顶间隙流动结构研究 [J].工程热物理学报，2020,41(2):329-334.GAO Limin,LIU Siyu,LI Yongzeng,et al.Investigation of the structure of cascade tip clearance flowfield [J].Journal of Engineering Thermophysics,2020,41(2):329-334.
• [4] 陆华伟，杨益，刘俊，等.叶顶间隙影响高负荷扩压叶栅气动性能实验研究 [J].工程热物理学报，2017,38(3):509-514.LU Huawei,YANG Yi,LIU Jun,et al.An experimental investigation on the aerodynamic performance of highly-loaded compressor cascade with different tip clearance [J].Journal of Engineering Thermophysics,2017,38(3):509-514.
• [5] 陆华伟，张永超，康达，等.附面层抽吸对带有叶顶间隙扩压叶栅涡量场影响 [J].科学技术与工程，2015,15(6):188-194.LU Huawei,ZHANG Yongchao,KANG Da,et al.Effects of boundary layer suction on vorticity of compressor cascades with tip clearance [J].Science Technology and Engineering,2015,15(6):188-194.
• [6] ZHU Xiangyuan,LI Guojun,JIANG Wei,et al.Experimental and numerical investigation on application of half vane diffusers for centrifugal pump [J].International Communications in Heat and Mass Transfer,2016,79:114-127.
• [7] SAKAGUCHI D,FUJII T,UEKI H,et al.Control of secondary flow in a low solidity circular cascade diffuser [J].Journal of Thermal Science,2012,21(4):384-390.
• [8] SAKAGUCHI D,TUN M T,MIZOKOSHI K,et al.Flow range enhancement by secondary flow effect in low solidity circular cascade diffusers [J].Journal of Thermal Science,2014,23(4):391-400.
• [9] MA Chao,LI Wenjiao,ZHANG Jianjian.Study of hub slotting and low-solidity combined treatment of diffuser vanes on stability of a centrifugal compressor [J].Journal of the Brazilian Society of Mechanical Sciences and Engineering,2021,43(7):340.
• [10] UBBEN S,NIEHUIS R.Experimental investigation of the diffuser vane clearance effect in a centrifugal compressor stage with adjustable diffuser geometry:part Ⅰ compressor performance analysis [J].Journal of Turbomachinery,2015,137(3):031003.
• [11] UBBEN S,NIEHUIS R.Experimental investigation of the diffuser vane clearance effect in a centrifugal compressor stage with adjustable diffuser geometry:part Ⅱ detailed flow analysis [J].Journal of Turbomachinery,2015,137(3):031004.
• [12] SITARAM N,ISSAC J M.An experimental investigation of a centrifugal compressor with hub vane diffusers [J].Proceedings of the Institution of Mechanical Engineers:Journal of Power and Energy,1997,211(5):411-427.
• [13] LIU Ruitao,XU Zhong.Numerical investigation of a high-speed centrifugal compressor with hub vane diffusers [J].Proceedings of the Institution of Mechanical Engineers:Journal of Power and Energy,2004,218(3):155-169.
• [14] SHIBATA T,YAGI M,NISHIDA H,et al.Performance improvement of a centrifugal compressor stage by increasing degree of reaction and optimizing blade loading of a 3D impeller [J].Journal of Turbomachinery,2011,133(2):021004.
• [15] ANISH S,SITARAM N.Computational investigation of impeller:diffuser interaction in a centrifugal compressor with different types of diffusers [J].Proceedings of the Institution of Mechanical Engineers:Part A Journal of Power and Energy,2009,223(2):167-178.
• [16] ISSAC J M,SITARAM N,GOVARDHAN M.Effect of diffuser vane height and position on the performance of a centrifugal compressor [J].Proceedings of the Institution of Mechanical Engineers:Journal of Power and Energy,2004,218(8):647-654.
• [17] OHTA Y,FUJISAWA N.Unsteady behavior and control of vortices in centrifugal compressor [J].Journal of Thermal Science,2014,23(5):401-411.
• [18] ZOU Wangzhi,HE Xiao,ZHANG Wenchao,et al.Roles of vanes in diffuser on stability of centrifugal compressor [J].Proceedings of the Institution of Mechanical Engineers:Journal of Aerospace Engineering,2019,233(14):5380-5392.
• [19] GRAPOW F,OLASEK K,LIKIEWICZ G,et al.Experimental study of vaneless diffuser rotating stall development and cell-merging phenomena [J].Journal of Turbomachinery,2021,143(5):051008.
• [20] 花严红，李振，刘兆平.R134a工质微小流量离心三元叶轮数值设计研究 [J].煤矿机械，2015,36(12):13-16.HUA Yanhong,LI Zhen,LIU Zhaoping.Study on numerical design of centrifugal three dimensional impeller of micro flow refrigerant R134a [J].Coal Mine Machinery,2015,36(12):13-16.
• [21] 贺晓希，宫武旗，邓俊杰，等.叶轮叶顶间隙对离心制冷压缩机性能的影响 [J].西安交通大学学报，2019,53(7):30-37.HE Xiaoxi,GONG Wuqi,DENG Junjie,et al.Influence of impeller tip clearance on the performance of centrifugal refrigeration compressor [J].Journal of Xi’an Jiaotong University,2019,53(7):30-37.
• [22] 高峰，潘晓燕，朱德润.机载离心式制冷压缩机叶轮级流动仿真研究 [J].机械科学与技术，2019,38(6):963-969.GAO Feng,PAN Xiaoyan,ZHU Derun.Simulating flow in pump impeller of airborne centrifugal refrigeration compressor [J].Mechanical Science and Technology for Aerospace Engineering,2019,38(6):963-969.
• [23] SIN J K,KIM K H,KANG S H.The design and performance test of a centrifugal compressor for HFC-134a refrigerant [J].Korean Journal of Air-Conditioning and Refrigeration Engineering,2010,22(3):139-148.
• [24] SITARAM N,ISSAC J M.An experimental investigation of a centrifugal compressor with hub vane diffusers [J].Proceedings of the Institution of Mechanical Engineers:Journal of Power and Energy,1997,211(5):411-427.
• [25] HAUPT U,ABDELHAMID A N,KAEMMER N,et al.Excitation of blade vibration by flow instability in centrifugal compressors [C]//ASME 1986 International Gas Turbine Conference and Exhibit.New York,NY,USA:ASME,1986:V001T01A115.