On mathematical modeling of fluid-structure interactions with nonlinear effects: Finite element approximations of gust response

0433144 - ÚT 2015 RIV NL eng J - Journal Article
Sváček, P. - Horáček, Jaromír
On mathematical modeling of fluid-structure interactions with nonlinear effects: Finite element approximations of gust response.
Journal of Computational and Applied Mathematics. Roč. 273, Januar 2015 (2015), s. 394-403. ISSN 0377-0427. E-ISSN 1879-1778
R&D Projects: GA ČR(CZ) GAP101/11/0207
Institutional support: RVO:61388998
Keywords : turbulent flow * gust * aeroelasticity * RANS equations
Subject RIV: BI - Acoustics
Impact factor: 1.328, year: 2015
http://dx.doi.org/10.1016/j.cam.2014.05.006

In this paper the numerical simulation of aeroelastic interactions of flexibly supported two-degrees of freedom (2-DOF) airfoil in two-dimensional (2D) incompressible viscous turbulent flow subjected to a gust (sudden change of flow conditions) is considered. The flow is modeled by Reynolds averaged Navier–Stokes equations (RANS), and by k−ωk−ω turbulence model. The considered flow problem is discretized in space using the fully stabilized finite element (FE) method implemented in the developed in-house program, which allows to solve interaction problems. In order to treat the time dependent inlet boundary condition the standard stabilization procedure was modified. Further, the under relaxation procedure was introduced in order to overcome the artificial instability of the coupling algorithm. The aeroelastic response to a sudden gust is numerically analyzed with the aid of the developed FE code.
Permanent Link: http://hdl.handle.net/11104/0238718