1. Bochum University of Applied Sciences Institute for Thermodynamics and Fluid Mechanics Am Hochschulcampus 1 44801 Bochum Germany
2. Bochum University of Applied Sciences Am Hochschulcampus 1 44801 Bochum Germany
3. Fraunhofer IEG Am Hochschulcampus 1 44801 Bochum Germany
4. Ruhr University Bochum Department of Mechanical Engineering Universitätsstrasse 140 44801 Bochum Germany
5. Technical University of Darmstadt Institute of Fluid Mechanics and Aerodynamics Alarich-Weiss-Strasse 10 64287 Darmstadt Germany