Title: Experimental detection of laminar-turbulent transition on a rotating wind turbine blade in the free atmosphere
Authors: Schaffarczyk, Alois Peter
Schwab, Daniela
Breuer, Michael  
Issue Date: 2017
Document Type: Article
Journal / Series / Working Paper (HSU): Wind energy : an international journal for progress and applications in wind power conversion technology 
Volume: 20
Issue: 2
Page Start: 211
Page End: 220
Abstract: 
This paper discusses the findings from a measurement campaign on a rotating wind turbine blade operating in the free atmosphere under realistic conditions. A total of 40 pressure sensors together with an array of 23 usable hot-film sensors (based on constant temperature anemometry) were used to study the behavior of the boundary layer within a specific zone on the suction side of a 30 m diameter wind turbine at different perational states. A set of several hundreds of data sequences were recorded. Some of them show that under certain circumstances, the flow may be regarded as not fully turbulent. Accompanying Computational Fluid Mechanics (CFD) simulations suggest the view that a classical transition scenario according to the growth of so-called Tollmien-Schlichting did not apply. Copyright 2016 John Wiley & Sons, Ltd.
Organization Units (connected with the publication): Strömungsmechanik 
ISSN: (e) 1099-1824
1095-4244
DOI: 10.1002/we.2001
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