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A grid and flow adaptive wall-function method for RANS turbulence modelling

Knopp, Tobias and Alrutz, Thomas and Schwamborn, Dieter (2005) A grid and flow adaptive wall-function method for RANS turbulence modelling. Journal of Computational Physics.

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Abstract

This paper presents a grid and flow adaptive wall-function method for RANS turbulence modelling with emphasis on aerodynamic flows. A near-wall grid adaptation technique ensures a locally appropriate resolution depending on both the near-wall flow physics to be captured and the range of validity of the wall-function model. The near-wall RANS solutions of the Spalart-Allmaras and SST k-omega turbulence model are investigated near stagnation points and subsequent not yet fully developed turbulent flow, and in regions of adverse pressure gradient before separation. These are compared with the corresponding turbulence model specific universal wall-functions and suggestions for the design of wall-function methods for non-equilibrium flows are given. Regions of non-equilibrium flow are detected by a flow based sensor and near-wall grid adaptation is then made possible due to the hybrid character of the wall-functions.

Item URL in elib:https://elib.dlr.de/45595/
Document Type:Article
Title:A grid and flow adaptive wall-function method for RANS turbulence modelling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knopp, TobiasUNSPECIFIEDUNSPECIFIED
Alrutz, ThomasUNSPECIFIEDUNSPECIFIED
Schwamborn, DieterUNSPECIFIEDUNSPECIFIED
Date:30 September 2005
Journal or Publication Title:Journal of Computational Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Status:Published
Keywords:Computational fluid dynamics, DLR TAU code, Wall function, RANS turbulence modelling, grid adaptation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Concepts & Integration (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:05 Jan 2007
Last Modified:14 Jan 2010 23:49

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