Viscous vs. inviscid interaction of a vorticity structure with a circular cylinder
type: Item
instance of: scholarly article
title: Viscous vs. inviscid interaction of a vorticity structure with a circular cylinder
zbMATH Open document ID: 0822.76018
DOI: 10.1007/BF00987579
author: M. Ranucci
author: Giorgio Riccardi
author: G. Graziani
author: Renzo Piva
published in: Meccanica
publication date: 1995-10-15T00:00:00Z
review text: The role of viscosity in the vorticity-solid body interaction is studied numerically, namely, evolution of a given two-dimensional vorticity distribution near a circular cylinder is analyzed. Two-dimensional inviscid contour dynamics technique and vortex sheet at the body surface are applied to inviscid simulations. For the viscous flow, two- dimensional discrete vortex approximation with the model of body surface as a continuum distribution of vorticity sources is used. In the inviscid case, almost circular trajectory of invariant vorticity patch around cylinder is obtained. Under the influence of viscosity, completely different almost dipolar structure arises from the coupling of the positive vorticity patch with negative vorticity shed.
Mathematics Subject Classification ID: 76D05
Mathematics Subject Classification ID: 76B47
Mathematics Subject Classification ID: 76M25
zbMATH DE Number: 761216
zbMATH Keywords: inviscid contour dynamics
zbMATH Keywords: vortex sheet
zbMATH Keywords: discrete vortex approximation
zbMATH Keywords: invariant vorticity patch
zbMATH Keywords: dipolar structure
zbMATH Keywords: positive vorticity patch
zbMATH Keywords: negative vorticity shed
reviewed by: Arkadi Berezovski
MaRDI profile type: Publication
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description: scientific article; zbMATH DE number 761216