Hot-Wire Measurements of Velocity and Temperature Fluctuations in a Heated Turbulent Boundary Layer.
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT GAS TURBINE TECHNOLOGY GROUP
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This paper describes the development of a multi-element hot-wire anemometry system designed to measure a wide variety of fluctuating velocity and temperature quantities in non-isothermal boundary layer flows. Descriptions of the design and evaluation of the multi-element probes and the analog-digital data recording and analysis system are included. Special features of this system were 1 that the hot-wire probes employed sensors of reasonably practical size 2.5 microns dia. and 2 that only standard, commercially available constant-temperature anemometers were utilized. Sample data, including Reynolds stress and turbulent Prandtl number distributions, demonstrate that boundary layer turbulence statistics were measured accurately with this system. Author
- Test Facilities, Equipment and Methods
- Fluid Mechanics