A SOLUTION TO THE OVER-PRODUCTION OF TURBULENCE BENEATH SURFACE WAVES IN RANS MODELS | Zendy

David R. Fuhrman | Zendy; Bjarke Eltard Larsen | Zendy

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A SOLUTION TO THE OVER-PRODUCTION OF TURBULENCE BENEATH SURFACE WAVES IN RANS MODELS

Author(s) -

David R. Fuhrman,

Bjarke Eltard Larsen

Publication year - 2018

Publication title -

coastal engineering proceedings

Language(s) - English

Resource type - Journals

eISSN - 2156-1028

pISSN - 0589-087X

DOI - 10.9753/icce.v36.waves.33

Subject(s) - reynolds averaged navier–stokes equations , turbulence , breaking wave , closure (psychology) , meteorology , computational fluid dynamics , instability , geology , environmental science , mechanics , oceanography , physics , wave propagation , economics , market economy , quantum mechanics

CFD simulations of breaking waves with RANS models over the past 20 years have shown a marked tendency to severely over-predict turbulence levels, both outside and within the surf zone. The reason is most likely due to the inherent instability of turbulence closure models, as originally diagnosed by Mayer & Madsen (2000). While they proposed an ad-hoc fix, a fundamentally sound solution to this wide-spread problem has, to date, eluded the coastal and ocean engineering modeling community.

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