Numerical Investigation of Shock Wave Boundary-Layer Interaction Using a Zonal RANS-LES Ansatz

Benedikt Roidl (), Matthias Meinke and Wolfgang Schröder
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Benedikt Roidl: RWTH Aachen University, Institute of Aerodynamics
Matthias Meinke: RWTH Aachen University, Institute of Aerodynamics
Wolfgang Schröder: RWTH Aachen University, Institute of Aerodynamics

A chapter in High Performance Computing in Science and Engineering '10, 2011, pp 369-383 from Springer

Abstract: Abstract In this paper a zonal RANS/LES approach is presented in which the regions with attached boundary-layers are computed via RANS and the regions with separated flows by using LES. The transition from RANS to LES takes place in an overlapping region between the RANS and LES zone. Two different turbulent inflow generation methods coupled with a controlled forcing ansatz are applied which enable a fast and smooth transition from two-dimensional RANS- to the three-dimensional unsteady LES solutions. Both approaches require local Reynolds shear stresses of a RANS solution which is located upstream of the LES. The inflow generation methods are validated for a boundary-layer flow and the fully coupled zonal approach is applied to a transonic flow over an airfoil both including a shock boundary-layer interaction.

Keywords: Turbulent Kinetic Energy; Control Plane; Reynolds Shear Stress; Algebraic Reynolds Stress Model; RANS Solution (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-15748-6_28

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DOI: 10.1007/978-3-642-15748-6_28

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