Particle Image Velocimetry (PIV)

Microvec Tomo PIV

3D PIV system is based on the original 2D PIV system but uses the principle of stereoscopic imaging to add the third dimension. At least two sets of cameras view the test area from different angles and with the two sets of two-dimensional velocity vector components a third velocity vector component can be calculated within the test area. The image is first calibrated, and afterward this third velocity component can be evaluated. Microvec has been developing proprietary PIV technology and has been constantly improving and implementing new techniques and algorithms based on the latest research in the field since 2002. It has a history of constantly introducing new and innovative techniques and algorithms such as Pressure PIV in 2014 or Light Field PIV in 2017.

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Technical Specifications

Parameter	Typical Range
Measurement Technique	Tomographic (volumetric) 3D PIV
Minimum Camera Count	4 cameras (example: 4 cameras at 200fps)
Reconstruction Methods	MART variants: Sparse, Intensity Enhanced, Spatial Filter, Convolution
GPU Acceleration	Supported
Data Export	TecPlot format

Key Specifications

•Tomographic PIV (TOMO-PIV) for volumetric 3D velocity measurement
•Full velocity and velocity gradient tensor fields obtainable
•Example case study: 4 cameras at 200fps with 8W DPSS laser in water channel
•Volumetric cross-correlation with window deformation algorithm and multi-pass iterations
•GPU acceleration support

Key Features

•Automatic recording to hard disk or memory
•Volumetric calibration and refinement algorithm
•Particle image enhancement technique
•Sliding background elimination
•Particle density compensation
•Geometric reconstruction technique
•Multiple MART reconstruction variants (Sparse, Intensity Enhanced, Spatial Filter, Convolution)
•Outlier detection and correction
•Multicore and parallel processing support
•GPU acceleration

Software & Integration

•MicroVec TOMO-PIV Software Module

Applications

•Turbulent boundary layer research
•Coherent vortex structure analysis
•Delta wing vortex breakdown studies
•3D flow field measurement in water channels and wind tunnels

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