On the spectrum of natural oscillations of two-dimensional laminar flows


naca-tm-1417
1957


If the stability of a laminar flow is investigated by the method of small oscillations, a complicated eigenvalue problem is encountered. Heretofore, attention has been directed toward the isolation of those normal modes of oscillation which are either neutrally stable or which grow in time. The present paper deals with the entire spectrum of characteristic values and the form taken by the associated oscillations.

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