Numerical modeling of turbulent flow over compliance surfaces
type: Item
instance of: scholarly article
zbMATH Open document ID: 1150.76409
author: G. O. Voropajev
author: N. V. Rozumnyuk
publication date: 2002-01-30T00:00:00Z
Mathematics Subject Classification ID: 76F40
Mathematics Subject Classification ID: 76F70
Mathematics Subject Classification ID: 76Z99
Mathematics Subject Classification ID: 74F10
zbMATH DE Number: 1698093
zbMATH Keywords: turbulent flow
zbMATH Keywords: compliance surface
zbMATH Keywords: boundary layer
zbMATH Keywords: drag reduction
MaRDI profile type: Publication
title: Numerical modeling of turbulent flow over compliance surfaces
published in: Prykladna Gidromekhanika
review text: A closed system of equations is obtained which governs the hydrodynamical interaction of a turbulent boundary layer with a deformable viscoelastic surface simulating cetacean skin. The closure hypotheses are generalized for the redistribution and turbulent diffusion in transport equations for the second correlation moments. The boundary condition approximations reflect the energy exchange between the turbulent boundary layer and viscoelastic layer through the deformed surface. The range of mechanical and geometrical parameters of viscoelastic coatings is determined as a function of the flow velocity where the friction drag can be reduced. The obtained numerical results allow to explain the friction drag reduction of hydrobionts.
description: scientific article; zbMATH DE number 1698093