Three-dimensional, three-component wall-PIV
This paper describes a new time-resolved three-dimensional, three-component (3D-3C) measurement technique called wall-PIV. It was developed to assess near wall flow fields and shear rates near non-planar surfaces. The method is based on light absorption according to Beer-Lambert’s law. The fluid con...
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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
June 2010
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| In: |
Experiments in fluids
Year: 2010, Volume: 48, Issue: 6, Pages: 983-997 |
| ISSN: | 1432-1114 |
| DOI: | 10.1007/s00348-009-0777-4 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s00348-009-0777-4
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| Author Notes: | André Berthe, Daniel Kondermann, Carolyn Christensen, Leonid Goubergrits, Christoph Garbe, Klaus Affeld, Ulrich Kertzscher |
| Summary: | This paper describes a new time-resolved three-dimensional, three-component (3D-3C) measurement technique called wall-PIV. It was developed to assess near wall flow fields and shear rates near non-planar surfaces. The method is based on light absorption according to Beer-Lambert’s law. The fluid containing a molecular dye and seeded with buoyant particles is illuminated by a monochromatic, diffuse light. Due to the dye, the depth of view is limited to the near wall layer. The three-dimensional particle positions can be reconstructed by the intensities of the particle’s projection on an image sensor. The flow estimation is performed by a new algorithm, based on learned particle trajectories. Possible sources of measurement errors related to the wall-PIV technique are analyzed. The accuracy analysis was based on single particle experiments and a three-dimensional artificial data set simulating a rotating sphere. |
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| Item Description: | Gesehen am 23.01.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1432-1114 |
| DOI: | 10.1007/s00348-009-0777-4 |