Interpretation of laser velocimeter measurements in turbulent boundary layers and regions of separation
Abstract
Two-component laser velocimeter measurements from the IT wind tunnel at the Arnold Engineering Development Center were used to determine the potential errors induced by biased sampling in a non-separated turbulent boundary layer and in a region where the boundary layer had seperated. The analysis showed that there are differences between the weighted estimates derived to correct for biased sampling and the unweighted estimates of the mean and the root-mean-square fluctuation velocity components. The differences are relatively small for the non-seperated boundary layer; however, the differences become quite large in the separated region.
- Publication:
-
5th Biennial Symposium on Turbulence
- Pub Date:
- 1979
- Bibcode:
- 1979turb.symp..153T
- Keywords:
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- Boundary Layer Separation;
- Error Analysis;
- Flow Measurement;
- Laser Doppler Velocimeters;
- Turbulent Boundary Layer;
- Root-Mean-Square Errors;
- Wind Tunnel Tests;
- Instrumentation and Photography