PIV system variation
PIV system variation
Many types of PIV systems, such as standard 2D-PIV,Stereo 3D-PIV, micro PIV, Time resolved PIV, etc., are available. Each system consists of different components.
The integrated PIV software Koncerto controls all the components and analyze the velocity field.
Standard 2D-PIV
The 2D-PIV system measures the in-plane two-dimensional velocity component irradiated on the laser light sheet. Frame Straddling allows for all speed ranges. Moreover, with the latest PIV analysis algorithm, it is possible to accurately analyze a wide range of speeds from low speed to high speed at the same time.It is compatible with various types of cameras and laser equipments, making it possible to construct any type of PIV system.Capable of measuring 2 velocity components (u and v) in a plane defined by the laser light sheet. It consists of a double pulse laser, a double shutter camera, BZ-60 light sheet optics, TT1680 timing controller, Koncerto software, and PC. Typical time resolution is 10 Hz.
An example of a system configuration
- Double shutter type PIV camera pco.1600 1600×1200 pixel 30 fps
- Double pulse YAG laser
- Timing controller LC880
- Software for system control and data analysis: Koncerto 2D
- PC
Features
- It is compatible with various types of cameras and laser equipments, making it possible to construct any type of PIV systemDouble pulse YAG laser
- High-performance analytic algorithms typified by deformation correlation and the latest analytical techniques such as phase filters that demonstrate the power to analyze the boundary layer are abundantly included.
- Applicable to a wide speed range from ultra low speed to hypersonic speed (straddling time 85 ns ~)
- Applicable from micro flow to large scale flow (abundant optical lineup)
- Synchronization function to rotary machine in angle domain (Synchronization at setting angle can be done independently of fluctuation of rotation speed)
Software for system control and data analysis: Koncerto 2D
Koncerto 2D has a ΔT correction function for accurate measurement even with PIV of hypersonic speed exceeding 1000 m / s. (option)
Timing controller
By using the timing controller it is possible to synchronize the pulsed laser and PIV camera with high precision.
Product Specifications
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| Angle of view | 1 to 1000 mm (Construct optical system according to specification) |
| Resolution | 1600 × 1200, 2560 × 1920, etc. (determined according to specifications) |
| Laser | Double pulse Nd: YAG laser |
| PIV measurement number | 1～15Hz |
| Software | Koncerto 2D |
Applications
- Wind tunnel experiment of automobile (large scale)
- Supersonic wind tunnel experiment
- Thermal spraying
- Spray nozzle
- Bell Nozzle
- Water current behind the screw of the ship
Stereo 3D-PIV system
Capable of measuring all 3 components in a plane defined by the laser light sheet. It consists of the second camera, Scheimpflug camera mount, calibration target in addition to the 2D-PIV system. Typical time resolution is 10 Hz.
An example of a system configuration
- Control and analysis software Koncerto II-3D
- Timing controller LC880
- High speed camera (2 units)
- High Repetition Double Pulse YAG Laser
- PC for control and analysis
- Shine fluog camera mount
- Calibration target
Features
Three component speed can be measured
In the stereo three-dimensional PIV, it is possible to measure three components of velocity in the light seat surface.
(Such a three-component velocity vector map in a two-dimensional plane is called a 2D3C format.)
Since flow is a three-dimensional movement, absolute value can be known by measuring three components.
Flexible camera layout
In the stereo PIV, you can place two cameras freely.
Besides the basic arrangement that installs two cameras on one side with respect to the laser light sheet, it is also possible to arrange them on both sides of the laser sheet by sandwiching.
Since there is no problem even if the installation angle of each camera is different, there are merits such as arranging the camera avoiding obstacles and measuring the wider area by using forward scattering.
Extensive measurement by forward scattering
Scattered light from fine particles with a diameter of several microns is called Mie scattering, and the scattered light intensity differs greatly depending on the scattering direction.
The front of the light source is particularly strong, and there is a place where the luminance is high even in the diagonally backward direction.
For forward scattering, much stronger scattered light can be obtained than 90 degrees side scatter.
In the stereo PIV, it is possible to measure a wide area by placing a high resolution camera in a position where it can receive forward scattering.
Product Specifications
横スクロールでご覧いただけます。
| Angle of view | 1 to 300 mm (Construct optical system according to specifications) |
| Resolution | 1600 × 1200, 2560 × 1920, etc. (determined according to specifications) |
| Laser | Double pulse Nd: YAG laser |
| PIV measurement number | 1～15Hz |
| Software | KoncertoⅡ-3D Online |
Applications
- Wind tunnel test of automobile
- Thermal spraying
- Spray nozzle
- Bell Nozzle
Time resolved PIV system(High Spped)
Capable of obtaining very high time resolution up to around 50 KHz. A high speed video camera and a high repetition rate pulse laser are used.
An example of a system configuration
- Control analysis software Koncerto II
- High speed video camera
- LC880 Timing controller LC880
- Various lasers (high repetition pulse laser · CW laser etc.)
-
Beam delivery optical system (mirror block, light arm, optical fiber, etc.)
Features
- Online compatible with each company's high-speed camera
- Supports CW laser and high repetition pulse laser such as YAG, YLF, YVO 4
- Simple synchronization of high repetition pulse laser, Supports various synchronization patterns such as straddling synchronization,
Online analysis is also possible
FD4 correlation
Algorithm developed for time series PIV, it is possible to analyze temporal speed fluctuation frequency and disturbance in each grid of PIV, highly accurate spatiotemporal validation, etc.
Product Specifications
横スクロールでご覧いただけます。
| Angle of view | 1 to 300 mm (Construct optical system according to specification) |
| Resolution | Various high speed cameras |
| Laser | High Repetition Double Pulse Nd: YAG Laser Continuous oscillation Nd: YAG laser |
| PIV measurement number | 1～15Hz |
| Software | KoncertoⅡ-2D , 3D Online |
Micro PIV system , Confocal Scanning Micro PIV system
For microfluidics such as MicroTAS, Lab on a chip, etc. An optical microscope is used. Piezo electric focus scanner is available.
Detail page
Probe PIV
The probe PIV is a 3D-PIV system in which two cameras are installed in the BOX and the laser and the camera are integrated by transmitting the laser with the fiber. It is unnecessary to adjust Shine Flag · Focus adjustment, Laser sheet adjustment, User calibration like ordinary 3D-PIV system.In addition, since calibration is performed during maintenance, calibration by the user is unnecessary.
An example of a system configuration
- Probe body
- Double pulse YAG laser
- Timing controller
- Dedicated PC, monitor