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Investigation of Numerical Wall Functions Based on the 1D Boundary Layer Equations for Flows with Significant Pressure Gradient

Knopp, Tobias and Spallek, Fabian and Frederich, Octavian and Rapin, Gerd (2016) Investigation of Numerical Wall Functions Based on the 1D Boundary Layer Equations for Flows with Significant Pressure Gradient. In: Boundary and Interior Layers, Computational and Asymptotic Methods - BAIL 2014 Lecture Notes in Computational Science and Engineering (ISSN: 1439-7358), 108. Springer International Publishing, Cham. pp. 111-120. ISBN 978-331925725-9. ISSN 1439-7358

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Official URL: https://link.springer.com/chapter/10.1007/978-3-319-25727-3_9

Abstract

In this paper we present a numerical wall function method for the simulation of isothermal flows with separation and reattachment based on the Reynolds averaged Navier-Stokes equations using an unstructured flow solver. The method is applied to the one-equation turbulencemodel by Spalart and Allmaras and is implemented in OpenFOAM®. For each wall node, a system of one-dimensional boundary-layer equations for the wall-parallel velocity component and for the turbulence quantity is integrated numerically on an embedded sub-grid in the nearwall region. The method is applied to the flow over a flat plate, over a backward facing step, and over a smoothly contoured ramp. The improvement of the results compared to universal wall functions become significant in case of separation and reattachment. © Springer International Publishing Switzerland 2015.

Item URL in elib:https://elib.dlr.de/100191/
Document Type:Contribution to a Collection
Additional Information:Print ISBN 978-3-319-25725-9 Online ISBN 978-3-319-25727-3
Title:Investigation of Numerical Wall Functions Based on the 1D Boundary Layer Equations for Flows with Significant Pressure Gradient
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Spallek, Fabianfabian.spallek (at) volkswagen.deUNSPECIFIED
Frederich, OctavianVolkswagen AG, 38436 Wolfsburg, GermanyUNSPECIFIED
Rapin, GerdVolkswagen AG, 38436 Wolfsburg, GermanyUNSPECIFIED
Date:20 April 2016
Journal or Publication Title:Boundary and Interior Layers, Computational and Asymptotic Methods - BAIL 2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:108
DOI :10.1007/978-3-319-25727-3_9
Page Range:pp. 111-120
Editors:
EditorsEmail
Knobloch, PetrUNSPECIFIED
Publisher:Springer International Publishing, Cham
Series Name:Lecture Notes in Computational Science and Engineering (ISSN: 1439-7358)
ISSN:1439-7358
ISBN:978-331925725-9
Status:Published
Keywords:wall functions, boundary layer approximation, separation, RANS, OPENFOAM
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:05 Jan 2019 10:47
Last Modified:06 Jun 2019 14:51

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