Computation of Helicopter Phenomena Using a Higher Order Method

Ulrich Kowarsch (), Constantin Oehrle, Martin Hollands, Manuel Keßler and Ewald Krämer
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Ulrich Kowarsch: University of Stuttgart, Institute of Aerodynamics and Gas Dynamics
Constantin Oehrle: University of Stuttgart, Institute of Aerodynamics and Gas Dynamics
Martin Hollands: University of Stuttgart, Institute of Aerodynamics and Gas Dynamics
Manuel Keßler: University of Stuttgart, Institute of Aerodynamics and Gas Dynamics
Ewald Krämer: University of Stuttgart, Institute of Aerodynamics and Gas Dynamics

A chapter in High Performance Computing in Science and Engineering ‘13, 2013, pp 423-438 from Springer

Abstract: Abstract The enhancement of the structured Computational Fluid Dynamics solver FLOWer in the field of flux computation and its advantage to numerical helicopter simulations is presented. The improvement includes the replacement of the second order spatial scheme with a fifth order scheme for flow state reconstruction and the implementation of different Riemann solvers for flux computation. Aim of the implementation is to reduce the numerical dissipation and to achieve a high vortex preservation essential for numerical investigations of helicopter flows, such as rotor-fuselage interaction and noise emission of the rotor due to blade vortex interactions. For these phenomena which are sensitive to the rotor wake preservation, an investigation with the second order and the fifth order scheme is performed to compare the numerical results as well as the computational performance. The results show significant improvements in the rotor wake conservation, especially in case of an acoustic evaluation. It is shown that the Riemann solver has a high influence to the vortex conservation with low additional computational cost.

Keywords: Rotor Blade; Riemann Problem; Computational Fluid Dynamics Simulation; Riemann Solver; WENO Scheme (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-02165-2_29

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DOI: 10.1007/978-3-319-02165-2_29

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