Coupling fluid (CFD) and structural (FE) models using finite interpolation elements. (English) Zbl 0999.74106

Beckert, Armin

Aerosp. Sci. Technol. 4, No. 1, 13-22 (2000).

From the summary: A scheme for coupling fluid (CFD) and structural models (FE) in space is presented which is based on finite interpolation elements. It is applied to static aeroelastic problems, in order to predict the equilibrium of elastic wing models in transonic fluid flow. The structure is represented by finite elements, and the related equations are solved using commercial FE analysis codes. The transonic fluid flow is described by three-dimensional Euler equations, solved by an upwind scheme procedure. The resulting coupled field problem containing the fluid and the structural state equations, is solved by applying a partitioned solution procedure. At each solution step, the interface and boundary conditions are exchanged and updated. A fixed-point iteration scheme is used for coupled aeroplastic equations.

MSC:

74S05	Finite element methods applied to problems in solid mechanics
74F10	Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
76H05	Transonic flows

Keywords:

fluid-structure-interaction; staggered algorithm; transionic fluid; finite interpolation elements; elastic wing; three-dimensional Euler equations; upwind scheme; partitioned solution procedure; fixed-point iteration scheme; coupled aeroplastic equations