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Erschienen in:
2009 | OriginalPaper | Buchkapitel
The Wall-PIV Measurement Technique for Near Wall Flow Fields in Biofluid Mechanics
verfasst von : André Berthe, Daniel Kondermann, Christoph Garbe, Klaus Affeld, Bernd Jähne, Ulrich Kertzscher
Erschienen in: Imaging Measurement Methods for Flow Analysis
Verlag: Springer Berlin Heidelberg
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This chapter describes the development of a new time resolved 3D PIV technique for near wall flow field measurements. This measurement technique, called wall-PIV, is based on Beer-Lambert’s law. It substitutes the classical PIV laser sheet by a diffuse, monochromatic full-field illumination that is limited to the near wall region by an absorbing molecular dye in the fluid. Aimed range of applications is the investigation of flow fields next to one- or two dimensionally curved, possibly flexing surfaces. The three dimensional three component flow estimation uses a new optical flow algorithm, based on particle trajectories. Results of the measurement technique’s application on a displacement pediatric blood pump are presented.