Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Anisotropic RANS Turbulence Modeling for Wakes in an Active Ocean Environment

Version 1 : Received: 14 November 2020 / Approved: 16 November 2020 / Online: 16 November 2020 (15:40:25 CET)

How to cite: Wall, D.; Paterson, E. Anisotropic RANS Turbulence Modeling for Wakes in an Active Ocean Environment. Preprints 2020, 2020110432 (doi: 10.20944/preprints202011.0432.v1). Wall, D.; Paterson, E. Anisotropic RANS Turbulence Modeling for Wakes in an Active Ocean Environment. Preprints 2020, 2020110432 (doi: 10.20944/preprints202011.0432.v1).

Abstract

The problem of simulating wakes in a stratified oceanic environment with active background turbulence is considered. Anisotropic RANS turbulence models are tested against laboratory and eddy-resolving models of the problem. An important aspect of our work is to acknowledge that the environment is not quiescent; therefore, additional sources are included in the models to provide a non-zero background turbulence. The RANS models are found to reproduce some key features from the eddy-resolving and laboratory descriptions of the problem. Tests using the freestream sources show the intuitive result that background turbulence causes more rapid wake growth and decay.

Subject Areas

Stratified Wakes; Turbulence; RANS; Secont-Moment Closure; Stress-transport

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