Selfoscillating 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 abovespecified Reynolds number conditions. The existence of a selfoscillating 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;
 NavierStokes Equation;
 Reynolds Number;
 Suction;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer