Response of plane viscous jet to entrance flow rate perturbation | Zendy

Knani Mohamed Ali | Zendy; Lili Taieb | Zendy; Boisson HenriClaude | Zendy

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Response of plane viscous jet to entrance flow rate perturbation

Author(s) -

Knani Mohamed Ali,

Lili Taieb,

Boisson HenriClaude

Publication year - 2001

Publication title -

international journal for numerical methods in fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.938

H-Index - 112

eISSN - 1097-0363

pISSN - 0271-2091

DOI - 10.1002/fld.178

Subject(s) - reynolds number , mechanics , instability , vortex , physics , perturbation (astronomy) , jet (fluid) , plane (geometry) , laminar flow , mathematics , classical mechanics , hele shaw flow , geometry , turbulence , quantum mechanics

A two‐dimensional numerical simulation solving unsteady incompressible Navier–Stokes equations is used to study the natural varicose instability of a plane jet in the Reynolds number range of 100–900. A transient train of vortices is observed at the beginning of the computation. It disappears yielding a steady flow. This flow is then used at the basis for forced excitation in order to study the space time development of instability. A Reynolds number dependant behaviour is observed which implies that viscosity directly affects the vortex dynamics. Copyright © 2001 John Wiley & Sons, Ltd.

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