0507312 - ÚT 2020 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Prasad, Chandra Shekhar - Pešek, Luděk
Classical flutter study in turbomachinery cascade using boundary element method for incompressible flows.
Advances in Mechanism and Machine Science. Krakow: Springer Nature Switzerland, 2019 - (Uhl, T.), s. 4055-4064, č. článku 00730404. 73. ISBN 978-3-030-20130-2. ISSN 2211-0984. E-ISSN 2211-0992.
[IFTOMM /15./. Krakow (PL), 30.06.2019-04.07.2019]
Grant CEP: GA ČR GA16-04546S; GA ČR GA16-04546S
Institucionální podpora: RVO:61388998
Klíčová slova: steam turbine * aeroelasticity * classical flutter * traveling wave method * panel method
Obor OECD: Applied mechanics

In this paper aeroelastic stability in steam turbine rotor is carried out using boundary element method. A mesh free fluid solver is developed for fast estimation of unsteady aerodynamic loading and to estimate the aerodynamic damping in 3D blade cascade. The aerodynamic damping is estimated traveling wave mode method. The unsteady incompressible flow field is modeled using Panel method. The structural part is modeled with non-linear beam element method based finite element method. Both solvers are loosely coupled to perform aeroelastic (flutter) co-simulation. The simulated results are validated with experimental results on 3D blade cascade. The proposed methodology successfully estimates aerodynamic damping with acceptable accuracy the for the aeroelastic (classical flutter) analysis of turbine blade cascade. Moreover, present aeroelastic method shows significant reduction in computational time.
Trvalý link: http://hdl.handle.net/11104/0302606