Particle Image Velocimetry (PIV) is a non-invasive optical measurement technique where the velocity field of an entire region within the flow is measured simultaneously. It is a powerful quantitative flow field mapping technique that can provide the extraction of measurement data and the visualization of flow structures. A typical PIV setup includes a camera, a high-power pulsed laser, seeding particles, an optical arrangement to convert laser beam to a light sheet and a synchronizer, which controls the synchronization between the laser and the camera.
PIV systems have been widely used in fluid dynamic researches. It is a powerful technique to investigate a wide range of flow phenomena in science and engineering from large-scale down to micro-scale. Planar and volumetric measurements can be applied to gaseous and liquid flows and even to multiphase or reactive flows like in combustion. PIV has been applied to a wide range of flow problems, varying from the flow over an aircraft wing in a wind tunnel to vortex formation in prosthetic heart valves.
FlowMaster PIV systems from LaVision GmbH can be used for 2 dimensions and stereoscopic flow field analysis with a unique and patented camera self-calibration method. This method uses the original particle images of both cameras to correct even large misalignments between calibration plate and laser light sheet. This method makes the measurements become easier, quicker, and more accurate.
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