In the present note the unsteady motion around a cylinder in an infinite viscous medium is studied. The initial motion is that due to steady rotation and the unsteadiness is introduced when the cylinder begins to deform. It is found that the viscous stress increases for an expanding cylinder and decreases for a contracting one.
 R. Dennemeyer: Introduction to partial differential equations and boundary value problems
. McGraw-Hill Book Company. MR 0224956
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