壁面导热对微型向心涡轮性能及流动影响

推进技术 ›› 2013, Vol. 34 ›› Issue (9): 1248-1256.

壁面导热对微型向心涡轮性能及流动影响

周琨¹,边磊¹,邹正平¹,王雷²

北京航空航天大学能源与动力工程学院/航空发动机气动热力国防重点实验室,北京 100191;北京航空航天大学能源与动力工程学院/航空发动机气动热力国防重点实验室,北京 100191;北京航空航天大学能源与动力工程学院/航空发动机气动热力国防重点实验室,北京 100191;中航工业沈阳发动机设计研究所涡轮室,辽宁沈阳 110015

发布日期:2021-08-15
作者简介:周琨(1983—),男,博士生,研究领域为涡轮内部复杂流动机理及气动设计技术。 E-mail:32040102.student@sina.com

Effects of Wall Heat Transfer on Performance and Flow for Micro Radial Inflow Turbine

National Key Laboratory of Science and Technology on Aero-Engines/School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;National Key Laboratory of Science and Technology on Aero-Engines/School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;National Key Laboratory of Science and Technology on Aero-Engines/School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;Turbine Division, AVIC Shenyang Aero-Engine Design & Research Institute, Shenyang 110015, China

Published:2021-08-15

摘要/Abstract

摘要： 为了探讨传热对于微型向心涡轮的性能和流动的影响规律,根据微型向心涡轮的特点,针对涡轮的轮毂侧壁面传热现象,建立了涡轮的气动性能随传热量变化的一维模型,并利用数值模拟对模型进行了验证,分析了不同传热量下微型向心涡轮的流动变化。结果表明所发展的模型有较好的精确度,可以用以评估传热对微型向心涡轮性能的影响；较大的传热会改变转子进口相对气流角并影响转子整个通道内的流动；涡轮对外传热使得涡轮输出功降低,涡轮效率明显降低。 

关键词: 传热;向心涡轮;数值模拟;流动;性能 

Abstract: In order to investigate the effects of heat transfer on performance and flow characteristics of micro radial inflow turbine,one dimensional model for turbine performance has been established with only hub heat transfer due to the structure feature of the micro gas turbine. Then a numeral simulation has been carried out to verify the model as well as to analyze the flow feature of the turbine. Results show that the model is accurate enough to be used to evaluate the effects of heat transfer on the turbine performance. Due to heat transfer, the relative flow angle at the rotor inlet is increased and the flow state in the whole rotor passage is changed. Meanwhile, the output power and efficiency of the micro turbine decrease obviously. 

Key words: Heat transfer; Radial inflow turbine; Numerical simulation; Flow; Performance

周琨,边磊,邹正平,王雷. 壁面导热对微型向心涡轮性能及流动影响[J]. 推进技术, 2013, 34(9): 1248-1256.

ZHOU Kun¹, BIAN Lei¹, ZOU Zheng-ping¹, WANG Lei². Effects of Wall Heat Transfer on Performance and Flow for Micro Radial Inflow Turbine[J]. Journal of Propulsion Technology, 2013, 34(9): 1248-1256.

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