The genesis of separation
Abstract
Numerical evidence is presented that the boundary layer about the impulsively started circular cylinder separates from the wall after about .75 diameter movement, leading to a singularity in the boundary-layer solution of which the analytical structure is derived and which is shown to satisfy the Moore-Rott-Sears conditions. During the evolution toward the separation structure there is no reason to doubt the prescribed pressure in the boundary-layer problem; hence, an unclouded physical understanding of separation is achieved. The analysis culminates in a better conception of separation at high Reynolds numbers.
- Publication:
-
Symposium on Numerical and Physical Aspects of Aerodynamic Flows
- Pub Date:
- 1981
- Bibcode:
- 1981snpa.proc.....V
- Keywords:
-
- Boundary Layer Separation;
- Circular Cylinders;
- Computational Fluid Dynamics;
- Rotating Cylinders;
- Rotating Fluids;
- Boundary Value Problems;
- Euler-Lagrange Equation;
- Lagrange Coordinates;
- Reynolds Number;
- Viscosity;
- Vortices;
- Fluid Mechanics and Heat Transfer