Vortex formation of unsteady flow near a moving wall
Abstract
Results concerning the process of vortex formation in an example of unsteady twodimensional flow near a moving wall are presented. The motion considered is that generated in a viscous fluid by a circular cylinder which suddenly starts from rest with a uniform translation perpendicular to and a uniform rotation about its axis. A study is made of the first vortex to form behind the cylinder over a range of Reynolds numbers. Then some features of the appearance of secondary vortices, the detachment of the primary vortex, and the ultimate coalescence of secondary vortices, are discussed. Comparisons made between results calculated respectively from unsteady boundarylayer theory and the NavierStokes equations for high Reynolds numbers will be presented in a later paper.
 Publication:

BoundaryLayer Separation
 Pub Date:
 1987
 Bibcode:
 1987bols.proc..235B
 Keywords:

 Angular Velocity;
 Circular Cylinders;
 High Reynolds Number;
 Two Dimensional Flow;
 Unsteady Flow;
 Vortex Generators;
 Wall Flow;
 Boundary Layers;
 NavierStokes Equation;
 Viscous Fluids;
 Fluid Mechanics and Heat Transfer