Title: | Numerical simulations of aeroelastic instabilities in a turbine-blade cascade by a modified Van der Pol model at running excitation |
Authors: | Pešek, Luděk Šnábl, Pavel Prasad, Chandra Shekhar Delanney, Y. |
Citation: | Applied and Computational Mechanics. 2023, vol. 17, no. 1, p. 35-52. |
Issue Date: | 2023 |
Publisher: | University of West Bohemia |
Document type: | article |
URI: | http://hdl.handle.net/11025/54293 |
ISSN: | 1802-680X (Print) 2336-1182 (Online) |
Keywords: | třepetání;lopatková kaskáda;sebebuzení;Van der Pol |
Keywords in different language: | flutter;blade cascade;self-excitation;Van der Pol |
Abstract in different language: | The onset and spread of flutter in a turbine blade cascade are numerically studied. Due to the application of thereduced-cascade model consisting of simple elements (springs, rigid bodies, linear dampers) and aeroelastic forcesintroduced by the analytical Van der Pol model, it is useful to study the dangerous states of vibration of suchcomplicated turbine parts. This study examines aeroelastic instabilities of a 10-blade cascade at running excitationthat arise due to wakes flowing from the stator blades to the rotating blades. Unlike our previous work, it bringsa new definition of the Van der Pol model of self-excitation that is controlled by relative inter-blade motion ofneighbouring blades. |
Rights: | © University of West Bohemia |
Appears in Collections: | Volume 17, number 1 (2023) Volume 17, number 1 (2023) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
792-4679-1-PB.pdf | Plný text | 5,14 MB | Adobe PDF | View/Open |
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11025/54293
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.