A combined application of the integral wall model and the rough wall rescaling-recycling method

Xiang Yang, J. Sadique, R. Mittal, C. Meneveau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this study, a recently proposed integral wall model and concurrent inflow generation technique are applied in Large-Eddy-Simulation (iWMLES) of developing turbulent boundary layer flow over cuboidal roughness. We examine the performance of this integral wall model at various Reynolds numbers. The integral wall model is based on the von-Karman-Pohlhausen integral method. With several parameters in the proposed functional form of the velocity profile determined from the local flow conditions, the wall model predicts velocity profiles that satisfy the vertically integrated momentum equation. Only an algebraic system must be solved in the wall model which thus preserves the essential economy of equilibrium type models. The rough wall inflow generation technique is proposed based on a new definition of a length scale that is appropriate for the roughness dominated inner layer. It extends the rescaling-recycling method to rough surfaces. The integral wall model and the rough wall rescaling-recycling method are applied in Large Eddy Simulations of turbulent boundary layers over surface with distributed cuboidal roughness. The effect of Reynolds number is studied. A good agreement is found between the roughness function (velocity shift) measured in iWMLES and the Colebrook formula and previous experimental measurements.

Original languageEnglish (US)
Title of host publication22nd AIAA Computational Fluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103667
Publication statusPublished - Jan 1 2015
Event22nd AIAA Computational Fluid Dynamics Conference, 2015 - Dallas, United States
Duration: Jun 22 2015Jun 26 2015

Publication series

Name22nd AIAA Computational Fluid Dynamics Conference

Other

Other22nd AIAA Computational Fluid Dynamics Conference, 2015
CountryUnited States
CityDallas
Period6/22/156/26/15

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All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Yang, X., Sadique, J., Mittal, R., & Meneveau, C. (2015). A combined application of the integral wall model and the rough wall rescaling-recycling method. In 22nd AIAA Computational Fluid Dynamics Conference (22nd AIAA Computational Fluid Dynamics Conference). American Institute of Aeronautics and Astronautics Inc, AIAA.