A high-order model for spike-type instability in axial compression systems

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• 英文论文题名：A high-order model for spike-type instability in axial compression systems
• 论文作者：Peng Lin ; Danfeng Chen ; Cong Wang
• 英文论文作者：Peng Lin ; Danfeng Chen ; Cong Wang ; School of Automation Science and Engineering ; South China University of Technology ; School of Automation ; Foshan University
• 年：2017
• 作者机构：School of Automation Science and Engineering,South China University of Technology;School of Automation,Foshan University;
• 英文论文关键词：Axial compression systems ; rotating stall ; spike-type stall ; inlet distortion
• 会议召开时间：2017-07-26
• 会议录名称：第36届中国控制会议论文集（B）
• 英文会议录名称：Proceedings of the 36th Chinese Control Conference（B）
• 语种：英文
• 分类号：V211.48
• 学会代码：KZLL
• 会议名称：第36届中国控制会议
• 会议地点：中国辽宁大连
• 主办单位：中国自动化学会控制理论专业委员会
• 学会名称：中国自动化学会控制理论专业委员会
• 页数：5
• 文件大小：391k
• 原文格式：D
• 会议级别：全国

摘要

Inlet flow non-uniformity(inlet distortion) can influence the transient behavior of stall disturbances and trigger the compression system instability. Physical modeling is a direct and effective method to study stall phenomena of axial compression systems with inlet distortion. In this paper, by using the general Galerkin projection and the spatial discretization methods, highorder ordinary differential equations(ODEs) are derived for analyzing the complex spike-type stall inception process in axial compression systems with inlet distortion. Considering the high-order stall modes, the wave propagating around the compressor annulus has a rich harmonic structure for compression systems with inlet distortion, and then the high-order model can more accurately depict the dynamics of rotating stall, especially the transient behavior of spike-type stall inception. Finally, numerical simulations are performed on an eighteenth-order model to illustrate the effectiveness of the high-order model.
Inlet flow non-uniformity(inlet distortion) can influence the transient behavior of stall disturbances and trigger the compression system instability. Physical modeling is a direct and effective method to study stall phenomena of axial compression systems with inlet distortion. In this paper, by using the general Galerkin projection and the spatial discretization methods, highorder ordinary differential equations(ODEs) are derived for analyzing the complex spike-type stall inception process in axial compression systems with inlet distortion. Considering the high-order stall modes, the wave propagating around the compressor annulus has a rich harmonic structure for compression systems with inlet distortion, and then the high-order model can more accurately depict the dynamics of rotating stall, especially the transient behavior of spike-type stall inception. Finally, numerical simulations are performed on an eighteenth-order model to illustrate the effectiveness of the high-order model.

引文

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