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

Knopp, Tobias (2010) Improved Wall Functions Based on the 1D Boundary Layer Equations for Flows with Significant Pressure Gradient. In: New Results in Numerical and Experimental Fluid Mechanics VII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 112. Springer Verlag, Berlin Heidelberg. pp. 51-58. ISBN 978-3-642-14242-0. ISSN 1612-2909

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Official URL: http://www.springer.com

Abstract

This paper presents an improved wall function method for unstructured flow solvers using the DLR TAU Code based on the one-dimensional boundary-layer equations for wall-parallel velocity, including pressure gradient term and convective term, and turbulence quantities in wall normal direction. For each wall node, this system of equations is integrated numerically on an embedded subgrid between wall node and first node above the wall. The method is verified for a flat plate turbulent boundary layer flow at zero pressure gradient. Then the method is applied to the flow in a diffusor at adverse pressure gradient without separation to assess different levels of approximation of the boundary layer model for wall-parallel velocity and to demonstrate the improvement of results compared to universal wall-functions.

Item URL in elib:https://elib.dlr.de/66660/
Document Type:Contribution to a Collection
Title:Improved 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
Date:2010
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics VII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:112
DOI :10.1007/978-3-642-14243-7_7
Page Range:pp. 51-58
Editors:
EditorsEmail
Dillmann, AndreasUNSPECIFIED
Heller, GerdAirbus Deutschland
Klaas, MiachaelRWTH Aachen
Kreplin, Hans-PeterUNSPECIFIED
Nitsche, WolfgangTU Berlin
Schröder, WolfgangRWTH Aachen
Publisher:Springer Verlag, Berlin Heidelberg
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-642-14242-0
Status:Published
Keywords:wall-function; pressure-gradient
HGF - Research field:Aeronautics, Space and Transport
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: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > C²A²S²E - Center for Computer Applications in AeroSpace Science and Engineering
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:07 Dec 2010 08:32
Last Modified:27 Feb 2015 15:45

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