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

• Main Authors: Idres, Moumen, Labanie, Mohamed, Okasha, Mohamed Elsayed Aly Abd Elaziz
• Format: Conference or Workshop Item
• Language: English; English
• Published: IOP Publishing 2018
• Subjects: TA Engineering (General). Civil engineering (General); TA349 Mechanics of engineering. Applied mechanics
• Online Access: http://irep.iium.edu.my/61996/13/61996_Transient%20flow%20in%20a%20compressor%20blade%20row_scopus.pdf; http://irep.iium.edu.my/61996/19/61996_Transient%20flow%20in%20a%20compressor%20blade%20row%20for%20a%20periodic.pdf; http://irep.iium.edu.my/61996/; http://iopscience.iop.org/article/10.1088/1757-899X/290/1/012055/pdf

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.