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- W2566966174 abstract "ARTICLE INFORMATION ABSTRACT Original Research Paper Received 26 January 2016 Accepted 21 April 2016 Available Online 18 May 2016 In this paper the flutter phenomenon in turbomachinary is introduced. The importance and characteristics of the flutter as a dynamic aeroelastic instability is presented. Conventional methods for the blade flutter test and different approaches in flutter analysis of blade are described. Among the existing analysis methods, one approach which only examines the stabilizing effect of fluid is used in order to analyze the flutter in this paper. Firstly, its equations are described and a criterion for the determination of the stability based on the analysis results is presented. According to the criterion the local and global stability can be concluded. Numerical analysis has been performed by ANSYS CFX. Mesh independence and two different turbulence models have been examined and results have been validated by test results. Numerical analysis has been carried out for two steady and unsteady states. In unsteady state the response of fluid to blade vibration in three modes has been calculated. In order to assess the total response two methods have been used and the results have been compared. Eventually local instability is calculated and the results presented in the figures, which illustrates the contribution of adjacent blades in instability of specific blade. The evaluation of global instability for three modes has been presented and the obtained results are in excellent agreement with the experiment." @default.
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- W2566966174 date "2016-07-10" @default.
- W2566966174 modified "2023-09-26" @default.
- W2566966174 title "NUMERICAL ANALYSIS OF BLADE FLUTTER IN LOW-PRESSURE TURBINE" @default.
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