Dresden 2009 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 16: Fluid dynamics I

DY 16.1: Talk

Wednesday, March 25, 2009, 14:45–15:00, ZEU 255

Measuring the Effect of Dynamic Stall — •Jörge Schneemann, Gerrit Wolken-Möhlmann, and Joachim Peinke — Universität Oldenburg, Institut für Physik, Germany

An airfoil in laminar inflow experiences static lift and drag forces. Under turbulent conditions dynamic effects like dynamic stall take place. We present measurements of dynamic stall in a closed test section of a wind tunnel using the pressure distribution on the wind tunnel walls to calculate lift forces. Dynamic stall was induced by pitching the foil sinusoidally. Pressure sensors placed in the foil were used to study the dynamics of the separation point. Our next task is to install a strain gauge based system for measuring radial forces on the mounting of the foil that will allow to investigate dynamic stall under turbulent conditions.