WALL-MODELLED LES USING HIGH- AND LOW-ORDER CFD CODES: APPLICATION TO A FLAT-PLATE BOUNDARY LAYER

Mukha T, Schlatter P (2022)

Publication Type: Conference contribution

Publication year: 2022

Publisher: International Symposium on Turbulence and Shear Flow Phenomena, TSFP

Conference Proceedings Title: 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022

Event location: Osaka, Virtual, JPN

Abstract

Results from wall-modelled large-eddy simulations of a zero-pressure-gradient flat-plate turbulent boundary layer in the range Reθ ≈ [4000,12000] are reported. The simulations are performed using a low- and a high-order code: OpenFOAM^® and Nek5000, respectively. For the latter, such simulations have previously not been reported in the literature. Structured hexahedral meshes are used, with two levels of refinement. As an important aspect in the wall modelling methodology, we use a temporally varying wall viscosity in order to enforce the wall shear stress. An equivalent inflow generation procedure is used for both codes, allowing for a more fair comparison. Results from Nek5000 simulations are generally more accurate. Both the skin friction and the profiles of velocity statistics are in good agreement with reference data. For Nek5000, this is an important milestone in the development of wall modelling capabilities for this solver. The results from OpenFOAM simulations exhibit a significant over-prediction of the skin friction, which has not been previously reported in the literature. Further investigation of the simulation methodology is necessary to find the cause of the problematic behaviour.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH)

Sweden (SE)

How to cite

APA:

Mukha, T., & Schlatter, P. (2022). WALL-MODELLED LES USING HIGH- AND LOW-ORDER CFD CODES: APPLICATION TO A FLAT-PLATE BOUNDARY LAYER. In 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022. Osaka, Virtual, JPN: International Symposium on Turbulence and Shear Flow Phenomena, TSFP.

MLA:

Mukha, Timofey, and Philipp Schlatter. "WALL-MODELLED LES USING HIGH- AND LOW-ORDER CFD CODES: APPLICATION TO A FLAT-PLATE BOUNDARY LAYER." Proceedings of the 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022, Osaka, Virtual, JPN International Symposium on Turbulence and Shear Flow Phenomena, TSFP, 2022.

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