进口畸变下非定常数值模拟进口边界数学模型

余春华; 李秋实; 袁巍; 周盛

进口畸变下非定常数值模拟进口边界数学模型

北京航空航天大学航空发动机气动热力重点实验室, 北京 100191

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出版历程
- 收稿日期: 2007-09-03
- 修回日期: 2007-12-03
- 刊出日期: 2008-09-28

Boundary condition model for unsteady numerical simulation under inlet distortion

National Key Laboratory on Aero-Engine, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 进口畸变下压气机内存在的不同空间和时间尺度的非定常流动之间的相互作用是进口畸变对压气机性能影响的重要流动机理.介绍了一种用于周向进口总压畸变下单转子通道内非定常数值模拟的进口边界简化模型,并基于该模型进行了三维非定常数值模拟.数值模拟结果显示了进口周向总压畸变的大尺度总压脉动和压气机转子通道非定常分离流场的相互作用过程.该模型为周向进口畸变的三维非定常数值模拟提出了一种简化方法.
- 进口畸变 /
- 非定常数值模拟 /
- 边界条件
Abstract: The unsteady vortices interactions in different scales of space and time for the compressor flow fields under inlet distortion are major influential factors to the performance of compressor.Aboundary condition model for unsteady numerical simulation under inlet circumferential distortion was presented in this paper.A 3-Dunsteady numerical simulation was conducted based on the boundary condition model.The results show that the model could reveal the unsteady interaction between wide scale total pressure wave resulting from inlet distortion and unsteady separation flow field in the rotor passage.This model provides a simple method for 3-Dunsteady numerical simulation under inlet circumferential distortion.
- distortion /
- unsteady numerical simulation /
- boundary conditions

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参考文献(14)

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