Abstract
A microscopic particle image velocimetry (μPIV) technique is developed based on light field microscopy and is applied to flow through a microchannel containing a backward-facing step. The only hardware difference from a conventional μPIV setup is the placement of a microlens array at the intermediate image plane of the microscope. The method combines this optical hardware alteration with post-capture computation to enable 3D reconstruction of particle fields. From these particle fields, we measure three-component velocity fields, but find that accurate velocity measurements are limited to the two in-plane components at discrete depths through the volume (i.e., 2C-3D). Results are compared with a computational fluid dynamics simulation.
Original language | English (US) |
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Journal | Experiments in Fluids |
Volume | 58 |
Issue number | 3 |
DOIs | |
State | Published - Mar 1 2017 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy
- Mechanics of Materials
- Computational Mechanics
- Fluid Flow and Transfer Processes