Self-oscillating flow in asymptotic boundary layers
Abstract
By using external controlling factors (negative pressure gradient, suction, transverse magnetic field for a conducting fluid, etc.), it is possible to extend a laminar boundary layer flow to considerably large Reynolds numbers. The extended laminar regime loses stability with respect to finite perturbations at less than critical Reynolds numbers as computed by linear theory. This paper studies stability loss in a laminar boundary layer flow with suction with respect to small perturbations under the above-specified Reynolds number conditions. The existence of a self-oscillating flow regime in the vicinity of the neutral curve of the stability region at all Reynolds numbers is demonstrated.
- Publication:
-
PMTF Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki
- Pub Date:
- April 1976
- Bibcode:
- 1976PMTF........64L
- Keywords:
-
- Asymptotic Methods;
- Flow Stability;
- Laminar Boundary Layer;
- Pressure Gradients;
- Self Oscillation;
- Small Perturbation Flow;
- Conducting Fluids;
- Incompressible Fluids;
- Laplace Transformation;
- Magnetic Fields;
- Navier-Stokes Equation;
- Reynolds Number;
- Suction;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer