Abstract
An experimental study of the effects of velocity bias in single realization laser Doppler velocimetry measurements in a high-speed, separated flow environment is reported. The objective of the study is to determine a post-facto correction method which reduces velocity bias after individual realization data have been obtained. Data are presented for five velocity bias correction schemes: inverse velocity magnitude weighting, interarrival time weighting, sample and hold weighting, residence time weighting, and the velocity-data rate correlation method. These data were compared to a reference measurement (saturable detector sampling scheme); the results show that the interarrival time weighting method compares favorably with the reference measurement under the present conditions.
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Herrin, J.L., Dutton, J.C. An investigation of LDV velocity bias correction techniques for high-speed separated flows. Experiments in Fluids 15, 354–363 (1993). https://doi.org/10.1007/BF00223413
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DOI: https://doi.org/10.1007/BF00223413