Transient flow in a compressor blade row for a periodic vibration motion

International Conference on Advances in Manufacturing and Materials Engineering 2017

机械制造;材料科学

Idres, Moumen^1 ; Labanie, Mohamed^1 ; Okasha, Mohamed^1

Department of Mechanical Engineering, International Islamic University Malaysia (IIUM), Jalan Gombak, Kuala Lumpur

53100, Malaysia^1

关键词: Aerodynamic damping;    Compressor blades;    Compressor rotors;    Harmonic motion;    Vibrating blade;    Vibration mode shapes;    Vibration modes;    Vibration motion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/290/1/012055/pdf
DOI  :  10.1088/1757-899X/290/1/012055

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The goal of this work is to conduct a transient compressor blade row flow simulation as part of blade flutter modeling. An integral step of blade flutter modeling is the calculation of the aerodynamic damping factor as a function of the possible vibration mode shapes. Using Fourier method, the number of blade passages required for transient flow analysis is kept to a minimum of two for all vibration modes. In this work, a compressor rotor blade row is considered. The vibration modes are obtained using ANSYS mechanical, then, unsteady flow is obtained for vibrating blades with a harmonic motion. Work of the flow on the blade is calculated and hence the aerodynamic damping is obtained.