Particle Image Velocimetry (PIV)

Particle Image Velocimetry (PIV) has been established in recent years as a reliable and efficient diagnostic instrument for non-intrusive analysis of transparent fluids. The main advantage over other established measurement methods, such as the Laser Doppler Anemometry (LDA) or the Doppler Global Velocimetry (DGV) lies in the fact that Particle Image Velocimetry allows recording instantaneous flow fields. This makes it possible to measure and analyze effects and processes in unsteady, three-dimensional flows. The Institute of Fluid Mechanics and Aerodynamics offers various commercial and self-developed PIV systems, from which all PIV variants can be built up if the components are suitably arranged:

• standard PIV
• stereoscopic PIV
• high-speed PIV
• microscopic PIV
• multi-plane PIV
• tomographic PIV
• scanning PIV

 

Despite decades of development, Particle Image Velocimetry still offers a lot of potential for improvements. At the Institute of Fluid Mechanics and Aerodynamics, developments are being pursued particularly in the following areas: