Unsteady viscous flow between two coaxial porous cylinders subjected to a series of random pulses

Document Type

Article

Publication Date

12-1-1989

Abstract

The present study deals with the unsteady flow of an incompressible viscous fluid between two infinitely long coaxial porous cylinders when a) a time-dependent random pressure gradient is applied parallel to the walls, b) the inner cylinder is subjected to a series of pulses of random strenght acting longitudinally at random instants of time, and c) there is a uniform injection of the fluid at the inner cylinder and a suction at the same rate at the outer cylinder. Several useful statistical characteristics of the flow quantities, such as velocity distribution and volumetric flow rate, are obtained. For the flow due to a stationary random pressure gradient alone, an asymptotic value for the correlation of velocity and also an expression for its spectral density are derived.

Identifier

0024902267 (Scopus)

Publication Title

Industrial Mathematics

ISSN

00198528

First Page

1

Last Page

15

Volume

39 pt 1

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