|
|
Numerical simulation of interaction of a vibrating airfoil with turbulent flax
Dubcová, L. ; Feistauer, M. ; Horáček, Jaromír ; Sváček, Petr
The report deals with numerical simulations of 2D viscous incompressible flow around a rotationaly vibrating profile. The flow is described by continuity and Navier-Stokes equations. Solution of the partial differential equations is based on finite element method. Because the Reynolds numbers higher than 10 000 are considered the solution is stabilized by SUPG method. Alge-braic turbulence model is taken into account and for simulations of the flow on moving grids the ALE method is used. the method was applied on harmonie vibrations of the profil NACA 0012 and the results are in good agreement with the experimental data obtained in ARTI.
|
|
|
Zpětná vazba v proudění nestlačitelné tekutiny a pohybujícího se tělesa
Růžička, M. ; Feistauer, M. ; Sváček, P. ; Horáček, Jaromír
the subject of this article is the numerical simulation of the interaction of two-dimensional incompressible viscous fluid and a vibrating airfoil. A solid airfoil with two degrees of freedom, which can rotate around the elastic axis and oscillate in the vertical direction, is considered. The numerical simulation sonsists of the finite element solutin of the Navier-Stokes equations coupled with a system of ordinary differential equations describing the airfoil motion. The time-dependent computational domain and a moving grid are taken into account with the aid of the Arbitrary Lagrangian-Eulerian (ALE) formulation of the Navier-Stokes equations. High Reynolds numbers up to 1 000 000 require the application of a suitable stabilization of the finite element discretization. Numerical tests prove that the developed method is sufficiently accurate and robust.
|
|
|
Interaction of fluid flow with an dirfoil
Feistauer, M. ; Horáček, Jaromír ; Sváček, P.
Numerical simulation of 2D oncompressible viscons fluid flow in interaktion with an vibrating dirfoil is described. The airfoil has two degrees of freedom, for rotation and translation. The Navier-Stokes and continuity equations are solved by finite element method associated with solution of ordinary differential equations describing the dirfoil motion. The computational domain is time dependent and the problem is solved by Arbitrary-Lagrangian-Eulerian (ALE) method.
|
|
| |
guest ::
