On the Development of Disturbances in Nonparallel Supersonic Flows

SummarY The development of the disturbances in the nonparallel flow is investigated. It is discovered that for some value of the Reynolds number Re* the Tollmien-Schlichting wave degenerated into a sound wave. Near Re* nonparallel effects and the exci­ tation of the Tollmien-Schlichting waves by a sound are very strong.