Titlebook: Laminar-Turbulent Transition; IUTAM Symposium, Sed Hermann F. Fasel,William S. Saric Conference proceedings 2000 Springer-Verlag Berlin Hei

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978-3-642-08752-3Springer-Verlag Berlin Heidelberg 2000

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Opening Address Turbulence in the Turn of the CenturyProfessor Saric, Professor Fasel, Respectable Invited Participants, Ladies and Gentlemen! It is my great pleasure to give an official IUTAM Address in the Opening Session of this Symposium on the “Laminar-Turbulent Transition” on behalf of the President of IUTAM, Professor Werner Schiehlen.

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Leading-Edge Acoustic Receptivity Measurements Using a Pulsed-Sound Technique m/s. The pulsed-sound approach is useful in two ways: it provides a direct measurement of Tollmien-Schlichting wave amplitudes without subtraction of an underlying signal, and it avoids acoustic feedback which occurs with continuous forcing.

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Receptivity to Freestream Turbulence and the Effect of Longitudinal Vortices in Boundary Layer Transary instability of a spanwise periodic flow, respectively. Receptivity results are consistent with experimental data and underscore the importance of nonparallel effects. Floquet analysis reveals that large spanwise modulations cause strong amplification of secondary disturbances at high frequencies and may lead to imminent transition.

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Early History of Compressible Linear Stability Theoryy of the numerical and experimental work carried out at JPL in the 1960’s is given, along with the key results and additional comments. Finally, the very different ideas arrived at as a result of this work are discussed and the importance of having reliable numerical results is stressed.

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