Stereo Particle Image Velocimetry System PIV

Stereo Particle Image Velocimetry System PIV - request a quote at [email protected]

Featured inquiry:
This measurement system is a laser system that allows the measurements all components of velocities and its statistics of fires and smoke, when applied appropriately. This laser system uses two laser sheets to measure all three components of velocity. Additionally, part of this system should have the ability to do smoke visualization. Currently, single-component invasive methods (hot-wires) are used, PIV is a non-invasive three-component measurement method, which can also be used inside fires and smoke.

2D-3C Stereo PIV system with option for SIV, that meet the following requirements:

Dual pulsed laser
A 532 nm laser optimized for PIV with 200 mj/pulse energy (per laser head)
at the repetition rate of at least 15 Hz. The pulse duration should be no more than 10 ns. The power supply unit and other accessories required to
run the laser must be supplied with the laser.
Continuous wave laser
A 2W CW laser for smoke visualization. The power supply unit and other accessories required to run the laser must be supplied with the laser.
Laser light sheet optics
Optics capable of focusing the laser beam waist between 200 mm to 4000 mm including
90 deg mirror unit accessory.
Two high resolution cameras
High-resolution cameras with at least 24 MP with a frame rate of 30 fps. The camera must be supplied with 35 mm lenses and a suitable frame grabber to operate the cameras.
Scheimpflug camera mounts (2)
Scheimpflug camera mounts capable of pivoting around the camera sensor plane without needing to tilt the camera lens.
System for automated camera calibration
A system for performing spatial camera calibrations directly and automatically, in air or water. The targets must use actively lit LED dots on the target and operation must be fully controlled by the PIV software. The target should be modular enough to mount other similar targets to create larger targets for larger measurement areas.
Performance synchronizer/programmable timing unit
Synchronizer to control the timing of cameras and laser with the following capabilities:
32 Sync outputs
Time resolution ≤ 8ns.
Min. pulse width ≤ 48ns.
4 Sync inputs.
4 analog outputs.
2 analog inputs.
Safety circuit.
USB & Ethernet.
This is for future use with other measurements devices, such as hot-wire anemometry and LDV.
High-performance imaging PC
Workstation with the following specifications:
Intel Xeon 12 Core CPU between 3.2 and 4.6 GHz Turbo
64GB RAM DDR5 RAM
1 TB SSD Class 40 for OS
2 x 4 TB HDD Raid System for data DVD -/+RW NVidia
20GB over 6000 CUDA cores for High Performance GPU computations and
for computing of Adaptive PIV, LSM 3D LSM and Voxel reconstructions
Windows 10 or later
Flow seeder
High volume seeder. Can work against pressure, at least 3 bar. DEHS fluid for seeding
Stereo PIV software features
Advanced PIV algorithms
o Auto adaptive use of window deformations
o Least-square matching (LSM) for calculating velocity gradients
o Adaptive interrogation window size to ensure high quality results in
high shear or velocity gradient regions with optimal spatial and temporal resolution
o Adaptive selection of interrogation window size based on local seeding density
Real-time particle density estimator
o PIV software capable of running estimator in real-time while the system is
running, allowing adjustments to the system while visualizing the results
o Helps with adjusting seeding, focus and aperture settings actively, saving
time compared to commonly used iterative post-processing method
Active image stitching
o Capable of seamlessly combining views from multiple cameras
Imaging set up assistant
o a dedicated tool for planning measurement set up, estimating the field
of view and finding the best camera positions with optical parameters
Semi-automatic camera sensor calibration
o Automated referencing for wide variety of cameras
Set up support tool for camera alignment
o Tool to help focus the camera on the calibration target and adjust
Scheimpflug angle for Stereo PIV measurements
Acquisition manager
o Helps automate and manage multiple measurements with different
settings
Automated Stereo PIV calibration
o Using actively lit LED markers on the designated target
STATEMENT
Stereo calibration refinement
o For enhancement of calibration based on particle images
Software supports 2D2C, 2D3C and 3D3C velocity
o Supports measurements from smallest scales of below 1 × 1 mm to
large scales above several square meters with velocities ranging from
0 m/s to supersonic speeds