Hot-wire measurements of velocity and temperature fluctuations in a heated turbulent boundary layer
Abstract
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.
- Publication:
-
29th International Gas Turbine Conference and Exhibit
- Pub Date:
- June 1984
- Bibcode:
- 1984gatu.confQ....B
- Keywords:
-
- Hot-Wire Anemometers;
- Temperature Measuring Instruments;
- Turbulent Boundary Layer;
- Analog To Digital Converters;
- Convective Heat Transfer;
- Heat;
- Prandtl Number;
- Reynolds Stress;
- Statistical Analysis;
- Variations;
- Velocity;
- Fluid Mechanics and Heat Transfer