MATEC Web Conf.
Volume 168, 2018XXI. International Scientific Conference - The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2018 (AEaNMiFMaE-2018)
|Number of page(s)||8|
|Section||Modelling and Simulation in Fluid Mechanics and Energy|
|Published online||23 May 2018|
CFD prediction of flutter of turbine blades and comparison with an experimental test case
Doosan Skoda Power s.r.o., Tylova 1/57, Pilsen 30128, Czech Republic
2 NUM solution s.r.o., Perucká 2482/7, Prague 12000, Czech Republic
3 University of West Bohemia, Faculty of Mechanical Engineering, Department of Power System Engineering, Univerzitní 8, Pilsen 30614, Czech Republic
* Corresponding author: email@example.com
Last stage blades are a key element of steam turbines and in many ways determine the turbine configuration alongside with the overall turbine performance. The total efficiency of the low pressure turbine section can be increased by extending the last stage blades. The design process of such long blades involves a flutter analysis using CFD tools which have to be validated by measurements in test facilities under various operating conditions. Experimental data obtained from a subsonic wind tunnel with an oscillating turbine blade cascade, which is available at the Department of Power System Engineering at the University of West Bohemia, was compared with simulations in ANSYS CFX currently used in the Doosan Škoda Power. The paper provides a brief summary of experimental rig description, CFD tool setup and the results for the case of a travelling wave mode with the pure torsion motion of amplitude of 0.5°, Ma = 0.2, reduced frequency of 0.38 and angle of attack +5°.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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