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ISBN 9783843939560

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978-3-8439-3956-0, Reihe Ingenieurwissenschaften

Dominik Puckert
Experimental Investigation on Global Instability and Critical Reynolds Number in Roughness-Induced Laminar-to-Turbulent Transition

144 Seiten, Dissertation Universität Stuttgart (2019), Softcover, A5

Zusammenfassung / Abstract

The present thesis provides an experimental confirmation of theoretically predicted flow instabilities downstream of a cylindrical roughness element in a laminar boundary layer. The experimental determination of the critical Reynolds number is of particular relevance for future applications of the threedimensional (3-D) global linear stability theory (LST). Moreover, the experiments demonstrate the significance of 3-D global LST in laminar-to-turbulent transition of a physical flow. The results of this work thus close the previous gap between theory and practical applications.