径向总压畸变对风扇前后流场的影响研究

中国民航大学学报

径向总压畸变对风扇前后流场的影响研究

邓甜，雷攀，高绪万，吴宇豪

（中国民航大学中欧航空工程师学院，天津300300）

收稿日期:2016-09-09 修回日期:2016-10-16 出版日期:2017-04-22 发布日期:2017-06-14
作者简介:邓甜（1982—），女，天津人，讲师，博士，研究方向为湍流、两相流.
基金资助:
国家自然科学基金项目（51506216）；中央高校基本科研业务费专项（ZXH2012H001）

Research on influence of radial total pressure distortion on forward and backward fan flow

DENG Tian, LEI Pan, GAO Xuwan, WU Yuhao

（Sino-European Institute of Aviation Engineering, CAUC, Tianjin 300300, China）

Received:2016-09-09 Revised:2016-10-16 Online:2017-04-22 Published:2017-06-14

摘要/Abstract

摘要：

采用数值模拟的方法，对某大涵道比小型涡扇发动机的风扇部分进行建模，并分别设置等效低压区为扇形角度60°、90°、120°及150°这4 种不同程度的总压畸变进口条件，研究进气道径向总压畸变进口条件下，风扇前后流场的变换规律。研究发现，风扇后流场的总压畸变指数比风扇前大，说明风扇后流场受到风扇转
动作用，其不稳定度程度比风扇前大；相对于切向速度和轴向速度，径向速度畸变指数受总压畸变的影响更大；总压畸变指数在风扇前呈增长趋势，且不同径向总压畸变进口条件的变化规律十分相似，总压畸变指数在风扇后存在最大值区域。

关键词: 涡扇发动机, 径向总压畸变, 畸变指数, 数值模拟

Abstract:

Modelling and simulation are used to study a small turbofan engine with high bypass ratio. With four situations of inlet total pressure distortion of equivalent surface of sector angles 60°, 90°, 120°and 150°, the influence of inlet radial total pressure distortion on forward and backward fan flow of turbofan engine is studied. It is found that the total pressure distortion index is bigger for backward fan part, and it is proved that the unstable level of backward fan part is bigger than forward fan part because of fan rotation; compared with tangential speed and axial speed,the radial speed distortion support is influenced more by inlet radial total pressure distortion; for the flow field of forward fan part, the total pressure distortion has the same type of increase for the four different inlet situations,but it is not the same for backward fan part which has the biggest value area.

Key words: turbofan-engine, radial total pressure distortion, distortion index, modelling and simulation

中图分类号:

V231.3

邓甜，雷攀，高绪万，吴宇豪. 径向总压畸变对风扇前后流场的影响研究[J]. 中国民航大学学报.

DENG Tian, LEI Pan, GAO Xuwan, WU Yuhao. Research on influence of radial total pressure distortion on forward and backward fan flow[J]. .

参考文献

[1] WALTER W, SHAW M. Predicted F100 Engine Response to Circumferential Pressure and Temperature Distortion[C]//Awatef Hamed. Inlet Distortion Considerations for High Cycle Fatigue in Gas Turbine Engine, AIAA, 1997.

[2] HAMED A, NUMBERS K, HAMEDA, et al. Inlet Distortion ConsiderationsforHighCycleFatigueinGas Turbine Engine[C]//Joint Propulsion Conference and Exhibit, 2013.

[3] DAVIS M, HALE A, BEALE D. An argument for enhancement of the current inlet distortion ground test practice for aircraft gas turbine engines[J]. Journal of Turbomachinery, 2002, 124(2): V001T01A011.

[4] AIAA. Unsteady Three-Dimensional Analysis of Inlet Distortion in Turbomachinery[C]//Joint Propulsion Conference and Exhibit, 1997：35-38.

[5] COUSINSWT. History, Philosophy, Physics, and Future Directions of Aircraft Propulsion System/Inlet Integration[C]//ASME Turbo Expo 2004：Power for Land, Sea and Air, 2004: 305-320.

[6] COUSINS W T, GEORGES M J, REZAEI H. Inlet Distortion Testing andAnalysisof aHigh-BypassRatioTurbofan Engine[C]//ISABE,2003.

[7] RODRIGUEZ J, KLUMPP S, BIESINGER T, et al. A New Inlet Distortion and Pressure Loss Based Design of an Intake System for Stationary Gas Turbines[C]//ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, 2013: V06BT38A002.

[8] 张靖煊. 畸变条件下轴流压气机叶顶间隙流对流动失稳影响的非定常机制[D].北京:中国科学院研究生院(工程热物理研究所),2007.

[9] 孙鹏.总压畸变对跨声速风扇流场结构影响的全流道数值模拟[D].哈尔滨:哈尔滨工业大学, 2007.

[10] 郑宁, 邹正平, 徐力平. 风扇进气畸变三维非定常数值模拟技术研究[J].航空动力学报, 2007, 22(1): 60-65.

[11] 张环.旋转总压畸变对压气机稳定性影响的研究[D]. 南京: 南京航空航天大学, 2009.

[12] 任伟峰. 小流量涡喷发动机进口总压畸变评定技术研究[D]. 长沙：湖南大学, 2010.

[13] 王春利, 乔渭阳. 畸变进气对两级风扇稳定性影响的数值模拟[J].燃气涡轮试验与研究, 2014(4): 1-6.

[14] 朱爱迪, 钟易成.基于进气道总压畸变试验的插板数值模拟研究[J].航空动力学报, 2015(3): 143-145, 157.

[15] 刘大响,叶培梁, 胡骏, 等. 航空燃气涡轮发动机稳定性设计与评定技术[M].北京:北京航空工业出版社, 2004: 186-278.

[16] 李阳, 胡骏.航空发动机进气总压周向畸变数值模拟[J].航空动力学报, 2005, 31(2): 11-13.

[17] 黄顺洲, 胡骏. 进气畸变对发动机稳定性影响的分析模型[J]. 航空动力学报, 2006, 27(5): 426-430.

[18] 王志强,胡骏,李亮, 等.进口总压随机脉动的数值模拟方法[J].航空动力学报, 2010, 25(1): 87-91.

[19] 胡骏,赵运生, 丁宁, 等. 进气畸变对大涵道比涡扇发动机稳定性的影响[J]. 航空动力学报, 2013, 39(6): 7-12.

[20] 李亮.进口总压畸变稳定性评定方法研究[D].南京:南京航空航天大学, 2008.