Laseroptical flow measurements

Laser-optical flow measurement technology - our solutions for test bench optimisation, flow diagnosis, validation of simulation results (CFD), volume flow measurement, etc.

Measurement methods used:

•     Particle Image Velocimetry (PIV)
•     Laser Doppler Velocimetry (LDV)
•     Phase Doppler Anemometry (PDA)
•     a.o.

Your advantages when using our services - know-how and equipment technology:

•     Use of high-end measurement technology without risk
•     Fast problem solving due to short training period
•     No acquisition costs for instrumentation
•     Access to fluidic expertise and extensive experience
•     Support for internal capacity problems

Typical sequence of a service:

•     Systematic problem analysis
•     Conception of the measurements
•     Modification and provision of the measurement technology
•     Carrying out the measurements
•     Evaluation and discussion of the measurement results.

Differentiation PIV - LDV

LDV:

•     Locally high-resolution point 1D or 2D velocity measurements in transparent fluids.
•     Use of cw lasers with low to medium light powers (approx. 10 to approx. 500 mW)
•     One-sided optical access to the fluid necessary
•     Sequential measurement of flow fields, e.g. full-field measurements in pipe cross-sections
•     Uncertainties of measurement approx. 0.2 -0.5 per cent of measuring value
•     Seeding: natural impurities (water) or low seeding (gases) necessary

PIV:

•     Two-dimensional, spatially and temporally high-resolution 2D and 3D measurements in transparent fluids
•     Temporal resolutions up to the kilohertz range possible
•     Two-sided optical access to the fluid necessary (for light section and camera)
•     Use of pulsed high-power lasers or laser diodes
•     Measurement uncertainties approx. 2 -5 per cent of measuring value
•     Seeding with suitable particles in the micrometre range necessary

Further information on test bench and pipe flow measurements

Further information on laseroptical measurements of flow phenomena