FtrTSPIV - Tomographic Stereo PIV System

FtrTSPIV-top

A versatile full-volume PIV system based on the sophisticated combination of Tomography & Stereo PIV.
Combining reliability and expandability, FtrPIV-Dynamic achieves high temporal resolution. Flexible customization opens up new possibilities for flow measurement.


FtrTSPIV catalogue (1.6MB)

Features

The newly developed Tomographic Stereo PIV Technique allows faster and lighter data analysis. Equipped with a multi-PIV camera system (FtrMPC) and high-function stereo PIV (FtrPIV-Stereo), the system responds to the demands for a state-of-the-art full-volume flow measurement.

  • Simple measurement procedure shared with Stereo PIV.

  • Faster data analysis through new algorithms.

  • Data capacity reduction through redundancy elimination.

  • Intuitive and high precision camera-calibration capability (ISCC).

  • Straightforward process from camera calibration until the result output.

  • Equipped with a multi-PIV camera system (FtrMPC) optimized for PIV measurement.

  • Optional technical support through extensive measurement consultations.

  • Optional measurement services provided by professional staff (on-site measurement available).

1. Multi-PIV Camera System (FtrMPC)

FtrMPC

This is the best imaging system for full-volume flow measurement. Using small and lightweight Ethernet CCD camera, all functions necessary for PIV imaging is operated through software by integrating the digital delay pulse generator (VSD2000) designed for PIV. This Standard System is also possible to expand to the Dynamic System, where high-speed cameras and a high-repetition-rate double-pulse laser are used.

FtrTSPIV Standard System

  • Multi-PIV Camera System (FtrMPC)
  • High-power double pulse Nd:YAG laser
  • Digital delay pulse generator (VSD2000)
  • GPU-equipped host computer
  • FtrTSPIV Software

FtrTSPIV Dynamic System

  • High-speed cameras
  • High-repetition-rate double-pulse Nd:YLF laser
  • Digital delay pulse generator (VSD2000)
  • GPU-equipped host computer
  • FtrTSPIV Software

2. Tomographic Stereo PIV Technique

Utilizing the three-dimensional light intensity distribution reconstructed by MART for standard CT, this new technique incorporates two-dimensional cross-correlation analysis based on stereo projection and stereo PIV. Faster and lighter data analysis has been achieved by dividing the imaging range into multi-plane regions and applying the stereo PIV in each region. This stereo PIV is full of powerful functions from pre-processing of particle images to erroneous vector rejection incorporated in our reputed FtrPIV-Stereo.

Tomographic Stereo PIV Technique

3. High-speed Analysis and Compact Data Capacity

FtrTSPIV-QVV

The three-dimensional light intensity distribution reconstructed by the MART had some problems regarding the significant increase in data volume compared to the original imaging data. FtrTSPIV has solved this problem through the development of multi-plane stereo PIV technique. As a result, the data capacity was reduced by an order of magnitude or more, and the data analysis speed increased by a factor of ten or more compared to the usual TomoPIV. FtrTSPIV also surpasses the usual TomoPIV in terms of data analysis accuracy and stability.

4. User-friendly System Integration

FtrTSPIV-soft

FtrQVV is a GUI-integrated software developed for easy full-volume measurement. It is a user-friendly software that can process any data analysis through simple operation.





5. Software Function Structure

FtrTSPIV-map

6. Reliable Technical Support (Optional)

Comprehensive technical support is provided by professional staff and is backed up by extensive measurement consultations. On-site measurement support for combined measurements (pressure and temperature) and large equipment can also be provided.

7. System Construction Cases

FtrTSPIV-soft

Tomographic stereo PIV measurement of the internal flow inside a motored engine for visualization.






8. Software specifications

FtrQVV

Front end function Starting TSPIV, Starting FtrPIV, Transferring parameters
Display of processed results Three-dimensional flow vectors (FtrPIV results) superimposed on particle image (back-projected image generated by TSPIV)
Selecting input particle images Selecting with a folder tree and a file list like Windows Explorer
Setting TSPIV parameters Size of rectangular parallelepiped to be analyzed, voxel resolution, slice thickness, output folder
Setting FtrPIV parameters Delta-t (interval for PIV), Interrogation window size, Calculating grid pitch, Search range, Erroneous vector rejection parameters

TSPIV engine

Implementation form x64 native code and CUDA code
CUDA Computer Capability 3.5 and later
Reconstruction of three-dimensional light intensity distribution MART (Multiplicative Algebraic Reconstruction Technique) accelerated by SPT (Simplified Projection Technique)
Back-projected image generation Three-dimensional light intensity modification function with depth position considered (for higher precision)

FtrPIV

Basic PIV operations Maximum light intensity difference, Light intensity standard deviation,Correlation coefficient, 3-Rank velocity vector, Neighbor median vector, Neighbor average vector
Erroneous vector inspection Effective light intensity, Light intensity standard deviation, Correlation coefficient, Vector magnitude, Neighbor median vector, Comparison with neighbor average vector, Relevance to neighbor
Stereo reconstruction Geometrical optics camera model
Processed result output CSV file output
Batch processing PIV operation process, Stereo reconstruction process
Other functions Refer to FtrPIV Software

Operating environment : Windows 7 64bit OS

This system was developed under the support of the 2013 Kanagawa Growth Industry and Innovation Project.

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