Both the laser Doppler and the phase Doppler techniques enjoyed immediate acceptance after their introduction within the fluid mechanic’s community for the study of single and multi-phase flows. Some very apparent reasons can be mentioned: non-intrusiveness, directional sensitivity, high spatial and temporal resolution and high accuracy. However, also the dominant use of Eulerian descriptions of flow fields, especially in the field of computational fluid dynamics (CFD), contributed to the attractiveness of a point-wise measuring technique with which statistical moments of the velocity distribution could be obtained.
KeywordsStein Refraction Velocimetry
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