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TECHNICAL BRIEFS

Dynamic Reversibility in Fluid Flows

[+] Author and Article Information
Kirit Yajnik

Indian Institute of Technology, Kanpur, India

J. Basic Eng 89(1), 237-238 (Mar 01, 1967) (2 pages) doi:10.1115/1.3609560 History: Received September 29, 1966; Online November 03, 2011

Abstract

This note points out the relatively simple character of dynamically reversible flows. A flow is said to be dynamically reversible if the reversed flow is possible under the action of suitable forces. The velocity field in the case of such flows of a Newtonian fluid subjected to conservative body forces can be decomposed into two parts, one satisfying Laplace’s equation and the other, the conduction equation. An integral similar to Bernoulli’s integral can also be found. In addition, the vorticity in two-dimensional flows is constant along a streamline. The property of dynamic reversibility is enjoyed by many flows such as irrotational flows, unidirectional flow through pipes, and two-dimensional axisymmetric vortexes.

Copyright © 1967 by ASME
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