An experimental comparison method is proposed for theverification of mean flow and turbulence measurements obtainedwith a three-dimensional laser Doppler velocimeter system. Suchmeasurements can include large errors caused by problems uniqueto three-dimensional systems. Direct comparisons of laser and hotcross-wire measurements obtained in two-dimensional flows, as isthe...

An experimental study of Taylor’s hypothesis in a quasi-two-dimensional turbulent soap film is presented. A two probe laser Doppler velocimeter enables a non-intrusive simultaneous measurement of the velocity at spatially separated points. The breakdown of Taylor’s hypothesis is quantified using the cross correlation between two points displaced in both space and time; correlation is better tha...