高低位进气方式对轮缘封严特性影响研究

推进技术 ›› 2016, Vol. 37 ›› Issue (10): 1958-1963.

高低位进气方式对轮缘封严特性影响研究

康文武,罗翔,刘冬冬,陶智,杜发荣

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家级重点实验室，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家级重点实验室，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家级重点实验室，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家级重点实验室，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家级重点实验室，北京 100191

发布日期:2021-08-15
作者简介:康文武，男，硕士生，研究领域为燃气入侵的研究研究领域为燃气入侵以及旋转盘腔。

Investigation for Effects of High and Low Gas Inlet on Characteristics of Rim Sealing

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics，School of Energy and Power Engineering，Beihang University，Beijing 100191，China,National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics，School of Energy and Power Engineering，Beihang University，Beijing 100191，China,National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics，School of Energy and Power Engineering，Beihang University，Beijing 100191，China,National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics，School of Energy and Power Engineering，Beihang University，Beijing 100191，China and National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics，School of Energy and Power Engineering，Beihang University，Beijing 100191，China

Published:2021-08-15

摘要/Abstract

摘要： 为了分析高低位进气方式对燃气入侵现象的影响，采用实验和非稳态的数值模拟方法研究了高低位进气方式对盘腔封严特性的影响，对比分析得到高低位进气方式的掺混流动过程。研究结果表明，高低位进气方式对封严效率的轴向分布有影响，高位进气封严效率沿轴向分布呈上升趋势，低位进气反之；在轮缘封严附近，两种进气方式的封严效率几乎不变；高位进气较低位进气有效阻止了入侵燃气向盘腔内部扩散过程，但没有改变封严环附近的扩散过程。

关键词: 高低位进气；燃气入侵；非稳态模拟；封严特性；掺混流动

Abstract: To study the effects of the high and low inlet on the ingestion，an experimental and unsteady numerical investigation was conducted to study the effects of high-low air inlet on the characteristics of rim seal，and the mixing flow of high and low air inlet was analyzed. The results show that different air inlet types had influence on the axial distribution of sealing effectiveness. The axial distribution of sealing effectiveness of high gas inlet was upward，but low gas inlet was the opposite. However，for two kinds of gas inlet，the sealing effectiveness was almost the same near the rim seal. High gas inlet can more effectively stop the diffusion process than low gas inlet，but two kinds of gas inlet do not change the diffusion process at the rim seal.

Key words: High-low gas inlet；Gas ingestion；Unsteady simulation； Sealing characteristics；Mixing flow

康文武,罗翔,刘冬冬,陶智,杜发荣. 高低位进气方式对轮缘封严特性影响研究[J]. 推进技术, 2016, 37(10): 1958-1963.

KANG Wen-wu,LUO Xiang,LIU Dong-dong,TAO Zhi,DU Fa-rong. Investigation for Effects of High and Low Gas Inlet on Characteristics of Rim Sealing[J]. Journal of Propulsion Technology, 2016, 37(10): 1958-1963.

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