Spiral vortex behavior in transition region and separation of threedimensional boundary layers on spheres rotating in axial flow
Abstract
The experiment shows that the transfer from the laminar to turbulent separation occurs at a definite value of the rotational speed ratio for a given Reynolds number. The critical condition of the transition is determined in a relation between the critical Reynolds number based on the momentum thickness and the rotational speed ratio. The measurement is also made for the angular velocity of spiral vortices in the transitional region relative to the rotating sphere surface.
 Publication:

LaminarTurbulent Transition
 Pub Date:
 1990
 Bibcode:
 1990ltt..proc..551K
 Keywords:

 Boundary Layer Separation;
 Boundary Layer Transition;
 Rotating Spheres;
 Three Dimensional Boundary Layer;
 Vorticity;
 Angular Velocity;
 Axial Flow;
 Reynolds Number;
 Vortices;
 Fluid Mechanics and Heat Transfer