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The non-monotonicity of solutions in swirling flow*

Published online by Cambridge University Press:  14 February 2012

J. B. McLeod
Affiliation:
Mathematics Research Centre, University of Wisconsin, Madison
S. V. Parter
Affiliation:
Mathematics Research Centre, University of Wisconsin, Madison

Synopsis

This paper studies the boundary-value problem arising from the behaviour of a fluid occupying the region 0 ≦ x ≧ 1 between two rotating discs, rotating about a common axis perpendicular to their planes, when the discs, are rotating in the same sense with speeds 0 ≦ Ω01. The equations which describe the axially symmetric similarity solutions of this problem are

with the boundary conditions

where ε = v/2Ω1 and v is the kinematic viscosity.

The major result is: There is an ε0 such that for 0<ε≦ε0 there does not exist a solution 〈H(x,ε), G(x,ε)〉 with G′(x,ε)≧0.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1977

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