Low Reynolds number piston generated toroidal vortices

Shankar, PN (1995) Low Reynolds number piston generated toroidal vortices. In: 6th Asian Congress of Fluid Mechanics, 22-26 May 1995, Singapore.

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Abstract

A theoretical analysis is presented of the low Reynolds number flow generated by the efflux of fluid through an orifice due to the impulsive motion of a piston. The paper presents a complete solution of the linearized Navier-Stokes equations that govern the flow field. The solution shows that the resulting toroidal vortices, quite unlike their high Reynolds number counterparts, are generated at the rear of the slug and move principally by diffusion. For unit slug length the vortex center moves linearly at approximately 48 deg to the vortex axis.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Reynolds number;Vortices;Pistons;Fluid mechanics; orifices;Fluids;Mathematical analysis
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Division/Department: Computational and Theoretical Fluid Dynamics Division
Depositing User: M/S ICAST NAL
Date Deposited: 22 Sep 2006
Last Modified: 24 May 2010 09:50
URI: http://nal-ir.nal.res.in/id/eprint/2788

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