Measurement of Unsteady Surface Forces by Means of Piezoelectrical Copolymer Coatings
The Pressure Sensitive Copolymer Coating (PSC) with piezoelectric properties is introduced as a new surface measurement technique. In contrast to conventional surface measurement techniques the PSC combines high spatial and temporal resolution, and can be applied to arbitrarily formed surfaces. The linear relationship between the mechanical pressure and the electrical voltage due to the piezoelectric effect is established by calibration measurements. Furthermore, first applications in transition experiments in incompressible as well as in compressible flows are presented. Finally, investigations of the flow around a wall mounted cylinder are presented.
KeywordsParticle Image Velocimetry Pressure Sensitive Paint Boundary Layer State Tollmien Schlichting Wave Time Resolve Particle Image Velocimetry
Unable to display preview. Download preview PDF.
- S. Bauer, et al.: Piezo-, Pyro-and Ferroelectric Polymers. Piezoelectric Materials: Advances in Science, Technology and Applications Vol. 76, pp. 11–19, Kluwer Academic Publishers, Dordrecht 2000.Google Scholar
- O. Frederich, J. Scouten, E. Wassen, F. Thiele, F. Hüttmann, M. Brede & A. Leder: Investigation of the Flow around a Wall-Mounted Finite Cylinder. To be published in: Journal of Turbulence.Google Scholar