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4Betriebliche Gesundheitsförderung in der Praxis: eine Bestandesaufnahme24
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Turbulence Control by Passive Means Breitscheidstr. 10 4Betriebliche Gesundheitsförderung in der Praxis:In the last decades, a lot of effort has been directed towards manipulation of turbulent boundary layers by passive devices such as external manipulators (thin flat plates or aerofoil section devices embedded in the outer layer) and or internal manipulators (small streamwise grooves acting directly on the inner region) for the purpose of reducing viscous drag. The former are commonly referred to as LEI3U s or BLADEs and the laHer riblets or grooves.
