The largest part of hydrodynamic drag during rowing, sailing or canoeing is the turbulent skin friction (80-90%). Higher velocities can be achieved by reducing the friction drag as a result of surface treatment. This research focuses on the development, characterization, and testing of drag-reducing surfaces, like nano- and micro-structured surfaces with hydrophobic or hydrophilic properties. This paper explains the Taylor-Couette set-up as a testing facility and discusses the first results in drag changes for several commercial products.
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