Fraunhofer Institute for Building Physics
Particle image velocimetry (PIV)
Energy Efficiency and Indoor Climate
| Measurement | Time-varying flow field of a fluid |
| Measurement objects | Air flow, buoyancy flow, convection, turbulence, flow around |
Technical data
| Nd:YAG double pulse laser | Pulse energy: 200 mJ at a wavelength of 532 nm Repetition rate: 0 to 15 Hz with a pulse duration between 6 and 9 ns Beam diameter: 6.5 mm Beam divergence: < 3 mrad |
| 4 sCMOS cameras | Resolution: 2560 pixel × 2160 pixel Readout noise: <3 electrons (50 frames/s) Pixel size: 6.5 μm × 6.5 μm Minimum image distance: 2 μs |
| Evaluation system | Workstation with 2x Quad Core with 1.8 TB of storage and 12 GB of memory, including special software for parallel computing on NVIDIA graphics cards |
Special features
| Tomographic PIV | Enhancements for measurement of 3D velocity fields in a maximum volume of 0.64 dm³ (requires 3 or 4 cameras) |
| Particle Tracking Velocimetry (PTV) | Conversion to methods for tracking particles through a fluid in the measuring area |
More information
- Any additional devices: helium bubble generator, compressed air bottle to spray (for seeding) to operate, 5 tripods, each 4 wide-angle and macro lenses, 4 Scheimpflug adapters, 5 goggles, light sheet optics for laser
- Seeding: di-ethyl-hexyl-sebacate (DEHS) or helium bubbles
- Black theatrical material with high absorption and protection available to blackout
Back
- to the search
- to the group Vehicle Climate Control Systems (ibp.fraunhofer.de)
- to the group Thermal Comfort, Models and Simulation (ibp.fraunhofer.de)
- to the department Energy Efficiency and Indoor Climate (ibp.fraunhofer.de)