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Continous Formulation of Wall Function with Adverse Pressure Gradient

Röber, Thomas (2010) Continous Formulation of Wall Function with Adverse Pressure Gradient. 17. DGLR-Fach-Symposium der STAB, 9. - 10. Nov 2010, Berlin, Deutschland.

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Abstract

In computational fluid dynamics, wall function boundary conditions are essential for the treatment of solid boundaries. In practice, computational meshes used to be created so that solid boundaries were either located in the laminar sublayer or in the logarithmic region of the boundary layer. In complex geometries, though, it is not straightforward to ensure that the first off-the-wall point satisfies the requirements for either an integration of the governing equations through the viscous sublayer, or that it is always in the logarithmic region of the boundary layer. Therefore, various continous formulations of boundary layer profiles have been proposed, which cover both the sublayer and the buffer layer. These formulations do not generally take into account the effects of pressure gradients on the boundary layer. In this paper, a continous formulation of the boundary layer velocity profile that includes the effects of pressure gradients is presented.

Document Type:Conference or Workshop Item (Paper)
Title:Continous Formulation of Wall Function with Adverse Pressure Gradient
Authors:
AuthorsInstitution or Email of Authors
Röber, ThomasDLR Institut für Antriebstechnik
Date:November 2010
Keywords:CFD, Fluid Mechanics, Wall Function, Boundary Layer Velocity Profile
Event Title:17. DGLR-Fach-Symposium der STAB
Event Location:Berlin, Deutschland
Event Type:national Conference
Event Dates:9. - 10. Nov 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other, Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L - no assignement, L AR - Aircraft Research
DLR - Research theme (Project):L - Concepts & Integration, L - Simulation & Validation, L -- no assignement
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes > Numerical Simulation
Institute of Propulsion Technology > Numerical Methodes
Deposited By: Thomas Röber
Deposited On:15 Feb 2011 13:06
Last Modified:15 Feb 2011 13:06

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