Initial-value problem for boundary layer flows
- 1 September 1979
- journal article
- Published by AIP Publishing in Physics of Fluids
- Vol. 22 (9) , 1602-1605
- https://doi.org/10.1063/1.862819
Abstract
The behavior of small disturbances in a boundary layer flow is studied. The initial-value problem is solved formally with Fourier–Laplace transforms, and an expression for the development of the velocity component normal to the wall is obtained. It is found that a disturbance evolves not only as discrete waves of the Tollmien–Schlichting type, but also has a portion described by a continuous spectrum. This portion is associated with a branch cut of the solution in the complex plane of the Laplace transform variable.Keywords
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