INTERACTION OF COMPRESSIBLE FLOW WITH TURBINE CASCADE

• ID: 2614, RIV: 10189379
• ISSN: not specified, ISBN: 978-80-87952-00-9
• source: Proceedings of the International Scientific Conference MMK 2013
• keywords: compressible Navier-Stokes equations; ALE formulation; discontinuous Galerkin method; fluid-structure interaction; transonic turbine cascade flutter
• authors: Petr Šimánek, Miloslav Feistauer
• authors from KNM: Feistauer Miloslav

Abstract

In the present paper we are concerned with interaction of viscous compressible flow and a vibrating transonic turbine cascade. We describe the Navier-Stokes equations. This system is discretized by the semi-implicit discontinuous Galerkin finite element method (DGFEM) and coupled with the solution of ordinary differential equations describing the motion of the blade section. To study the flow in the time-dependent domains the Arbitrary Lagrangian-Eulerian (ALE) method is used. Computational results showing the flow induced vibrations are presented.