Numerical analysis of vortex breakdown
Abstract
Spiral, bubble, and double helix type vortex breakdowns are discussed. Hall's conjecture (that when an adverse pressure gradient is increased, less swirl is required to maintain breakdown, or if the same level of swirl is maintained, the breakdown is moved upstream) is proved. Estimation of the axial pressure gradient; computation of breakdown point for slender vortices; initial and boundary conditions; and determination of the pressure are considered.
- Publication:
-
In Von Karman Inst. for Fluid Dynamics Introduction to Computational Fluid Dynamics 23 p (SEE N86-27597 18-34
- Pub Date:
- 1985
- Bibcode:
- 1985icfd.vkifR....K
- Keywords:
-
- Computational Fluid Dynamics;
- Stagnation Point;
- Vortex Breakdown;
- Boundary Conditions;
- Boundary Value Problems;
- Pressure Gradients;
- Swirling;
- Fluid Mechanics and Heat Transfer