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Fluid-structure interactions of a cross-parachute: Numerical simulation. (English) Zbl 0999.76085

Summary: The dynamics of parachutes involves complex interaction between the parachute structure and the surrounding flow field. Accurate representation of parachute systems requires treatment of the problem as a fluid-structure interaction (FSI). In this paper we present numerical simulations for the purpose of comparison to a series of cross-parachute wind tunnel experiments. The FSI model consists of a three-dimensional fluid dynamics (FD) solver based on the deforming-spatial-domain/stabilized space-time procedure, a structural dynamics (SD) solver, and a method of coupling the two solvers. These FSI simulations include the prediction of the coupled FD and SD behavior, drag histories, flow fields, structural behavior, and equilibrium geometries for the structure. Comparisons between the numerical results and wind tunnel data are conducted for three cross-parachute models and at three different wind tunnel flow speeds.

MSC:

76M10 Finite element methods applied to problems in fluid mechanics
76D05 Navier-Stokes equations for incompressible viscous fluids
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
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