Publication Date:
2019-07-13
Description:
The existence of 'sampling bias' in individual-realization laser velocimeter measurements is experimentally verified and shown to be independent of sample rate. The experiments were performed in a simple two-stream mixing shear flow with the standard for comparison being laser-velocimeter results obtained under continuous-wave conditions. It is also demonstrated that the errors resulting from sampling bias can be removed by a proper interpretation of the sampling statistics. In addition, data obtained in a shock-induced separated flow and in the near-wake of airfoils are presented, both bias-corrected and uncorrected, to illustrate the effects of sampling bias in the extreme.
Keywords:
INSTRUMENTATION AND PHOTOGRAPHY
Type:
Engineering applications of laser velocimetry; Symposium; Nov 14, 1982 - Nov 19, 1982; Phoenix, AZ
Format:
text
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