Endoscopic Stereoscopic Particle Image Velocimetry (PIV)
Field of Application
- Non-contact measurement of velocity fields in turbomachinery
- No major orifices in the casting for optical access are necessary with endoscopic version
- Measurement of all three components of the local velocities (in-plane)
- Flow velocity
Stereo Particle Image Velocimetry (PIV) is a non-invasive optical method by which the three components of the instantaneous velocity vectors can be determined in the measuring plane. Each of the cameras takes two shots of a particle-loaded flow.
Analysis and reverse transformation of the images reveals the velocity vectors across the whole frame. This allows both large-scale investigation of unsteady flow structures and determination of the stationary flow field. These methods currently are used with a purely endoscopic entrance in turbomachinery at the TFD.
Advantages of the endoscopic stereo-PIV system in comparison to other optical measurement methods are:
- Small optical entrance
- Determining a velocity field (field measurement)
- Determination of all three velocity components within moderate measurement time
Specific extensions of the system at the TFD:
- Use of endoscopes for the generation of the light sheet and image capture
- Phone: +49 (0)511 762 5180
- Mail: gilgetfd.uni-hannover.de