| Issue |
MATEC Web Conf.
Volume 211, 2018
The 14th International Conference on Vibration Engineering and Technology of Machinery (VETOMAC XIV)
|
|
|---|---|---|
| Article Number | 15001 | |
| Number of page(s) | 6 | |
| Section | TP2: Fluid structure interaction | |
| DOI | https://doi.org/10.1051/matecconf/201821115001 | |
| Published online | 10 October 2018 | |
Analysis of classical flutter in steam turbine blades using reduced order aeroelastic model
1
Institute of Thermomechanics, CAS,
Prague
2
Institute of Thermomechanics, CAS,
Prague
* e-mail: cprasad@it.cas.cz
** e-mail: pesek@it.cas.cz
In the present paper classical flutter phenomena in LP steam turbine rotor is studied . A reduced order aeroelastic model (ROAM) with acceptable accuracy and fast execution is developed for this purpose. The aerodynamics damping (AD) is estimated using Traveling wave mode (TWM) method. Flow field is modeled using Panel method. For the structural part ROM non-linear beam element method (BEM) based FEM structural solver is used. Partitioned based ( loose) coupling approach is adopted to perform aeroelastic (flutter) cosimulation. Both 2D cascade flow and 3D cascade are modeled.The estimated stability parameters are compared with experimental data. Moreover, present ROAM shows significant reduction in computational time.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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