A numerical study of pulsating flow behind a constriction-Reference-Cited by-同舟云学术

A numerical study of pulsating flow behind a constriction

Published:1995-10-25 Issue: Volume:301 Page:203-223
ISSN:0022-1120
Container-title:Journal of Fluid Mechanics
language:en
Short-container-title:J. Fluid Mech.

Author:

Rosenfeld Moshe

Abstract

The flow field behind a constricted channel is studied numerically. A pulsating incoming flow with a non-vanishing mean is imposed at the entrance and the flow field is investigated for a wide range of Reynolds and Strouhal numbers (1500 > Re > 45, 12 > St > 0.01). In most cases (except at the two ends of the Strouhal number regime or for Re < 90), propagating vortices are found downstream of the constriction with a wavy core flow between them. The size and number of coexisting vortices depend on St but less on Re. The strength and structure of the vortical regions depend on both Re and St. The formation of the vortices is discussed for the various St regimes and the characteristics of the vortical flow are described.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

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