We introduce a novel class of algorithms for evaluating PIV image pairs. The mathematical basis is a continuous variational formulation for globally estimating the optical flow vector fields over theâ€¦ (More)

Several possibilities for the use of elastic light scattering in the backscatter range (scattering angle theta(s) > 140 deg) for determination of size, velocity, and refractive index of sphericalâ€¦ (More)

For the estimation of the autocorrelation and the auto-spectral density from irregularly sampled laser Doppler data sets three types of estimators are known, the slotting technique, the directâ€¦ (More)

The Variable Density Turbulence Tunnel at the Max Planck Institute for Dynamics and Self-Organization in GÃ¶ttingen, Germany, produces very high turbulence levels at moderate flow velocities, lowâ€¦ (More)