Vorticity Optical Probe.
Final technical rept. 1 Jun 83-14 Apr 85.
CORNELL UNIV ITHACA NY DEPT OF APPLIED AND ENGINEERING PHYSICS
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This document is concerned with the design, construction and testing of our new scale flow system. It appears from preliminary examination that this flow system generates a turbulent boundary layer suitable for wide ranging study of vorticity dynamics. Verification that the flow exhibits normal boundary layer characteristics with both flow visualization and hot-film anemometry is under way. The Vorticity Optical Probe VOP provides a measure of local vorticity fluctuations. Ideally, the study of boundary layer turbulence would be conducted on a smooth flat plate with uniform flow at infinity, no plate end effects, and neglegible disturbance by extended flow structures and background turbulence in the incident flow. To minimize the scale and cost of the tunnel, compromises were required. Nonetheless, it was our goal to simulate the above free boundary layer conditions, to the maximum extent that this is possible in a modest scale flow tunnel suited to application of the VOP geometry using the available technical experience, in order to confirm the precision and accuracy of the probe for study of the vorticity dynamics of both transitional an turbulent flow and to carry out precise studies on well defined flows.
- Optical Detection and Detectors
- Fluid Mechanics