FtrPIV-Dynamic (Two-component/Stereo)
Combining reliability and expandability, FtrPIV-Dynamic achieves high temporal resolution.
Flexible customization opens up new possibilities for flow measurement.
Features
This device quantifies changing flow using temporal resolution of up to 10 kHz. It is powerful enough to determine flows surrounding high speed objects and flows involving fluid noise.
Extensive measurement example library
- Airflow around a moving printer head
- Stereo measurement of the flow inside a torque converter model
- Synchronized measurement of the flow around a rotating impeller inside a pump
- Airflow behind a high speed valve
- Liquid flow around a precision machine part in reciprocating motion
- Simultaneous measurement of airflows and fluid noise in an air-cooling duct
- Stereo measurement of the flow inside an engine for flow visualization
FtrPIV-Stereo functions
FtrPIV-Dynamic allows seamless expansion from the standard two-component measurement to stereo measurement. It can utilize the extensive functions available in our FtrPIV-Stereo.
- Intuitive camera calibration with integrated camera calibration software
- Equipped with both geometric camera model and direct-mapping function
- Efficient stereo analysis using high-speed back-projection
- Easy-to-understand stereo PIV analysis procedure, similar to standard two-component measurement
- Auto batch processing function, from PIV image input to statistical operations
- Customized camera calibration tools (optional)
Standard system configuration
The standard system configured with recognized hardware can be flexibly customized using existing equipment or other desired hardware.
- High-repetition-rate double-pulsed Nd:YLF laser
- High-speed black and white C-MOS sensor camera (two cameras for Stereo PIV)
- Digital delay generator
- Host computer and dedicated software
Examples of analog signals
This device allows synchronized capture of all types of analog signals and high-speed images. Unsteady flow phenomenon can be determined and understood through combined measurement.
- Sound pressure signal from a microphone
- Fixed-point velocity signal from hot-wire anemometer and LDV
- Pressure signal from a high-response pressure pickup
- External events signal
Example 1
Dynamic stereo PIV allows rotation-synchronized measurement of the flow inside the torque converter model.
Particle images after back-projection (stereo pair)
In-plane vector map and color contour of out-of-plane velocity component
Example 2
Dynamic stereo PIV : In-plane vector map and color contour of out-of-plane velocity component
Software specifications
| Function | Specification (Selectable menu item) |
|---|---|
| Input images file | BMP, JPEG, PNG, GIF, TIFF, AVI |
| Basic PIV operations | Direct Cross Correlation method (DCC), Optical flow method, Multi-correlation method, Multi-grid method |
| Advanced PIV operations | Window deformation method |
| Erroneous vector inspection | Maximum light intensity difference, Light intensity standard deviation, Correlation value, Vector length, Comparison with neighborhood median vector, Comparison with neighborhood mean vector, Relationship with neighborhood statistic, The number of valid neighborhood vectors |
| Specify calculation region mark | Specify GUI tool, Mask file, Auto generate mask image |
| Background reduction | Simple statistics background (Mean, etc.), Multiple backgrounds (Moving averages), Optimization |
| Image processing | Fixed kernel filter (Low pass, High-pass, Gaussian, Laplacian, Cross Sobel, Sharpening, Arbitrary kernel), Median filter, Brightness and contrast |
| Geometrical conversion | Fixed kernel filter (Low pass, High-pass, Gaussian, Laplacian, Cross Sobel, Sharpening, Arbitrary kernel), Median filter, Brightness and contrast |
| Geometrical conversion | Perspective projection transformation, Affine transformation, Mirroring |
| Interpolation for removed erroneous vectors | Gaussian interpolation (Spatial) |
| Statistical calculation from time series data | Minimum - Maximum, Arithmetic mean, Median, Standard deviation, Reynolds stress, Turbulence energy, Mean vorticity, Mean flow rate |
| Statistical calculation from spatial data | Arithmetic mean, Standard deviation, Variance , Area, Instantaneous Flow rate, Vorticity |
| Filtering | Arithmetic operation of fixed values, Arithmetic operation of statistical values, Band-pass filter (Spatial), Band-pass filter (Temporal) |
| Alert inspection | Search range, Valid vector number, Mean correlation value, Image quality |
| Analysis | Vector distribution, Search range |
| Output of results | Text (plt, fld, p3d, csv), Still images, Motion images foreground image, dynamic image |
| Visualization | Erroneous vector marking, Display legend. |
| Batch processing | Back projection, Background reduction, Statistical calculation, DOS command processing, etc. |
| Customization | Flexible customization (Optional) |
