Acquisition of Turbulence Data Using the DST Group Constant-Temperature Hot-Wire Anemometer System
DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION FISHERMANS BEND (AUSTRALIA) FISHERMANS BEND Australia
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This report gives details of how to use the constant-temperature hot-wire-anemometer system at DST Group to measure mean velocities, broadband turbulence terms and spectra of velocity fluctuations in the low-speed wind tunnel at DST Group. The use of both single-wire and crossed-wire 2 wire probes is described. Areas covered include a description of the anemometers and probes, soldering hot-wire filaments onto the prongs of a probe, etching the filaments, setting up of instrumentation, setting resistance ratios of hot wires, setting the frequency response of anemometers, calibration of hot wires, acquisition of data, reduction of data to obtain turbulence quantities, and use of associated software. The report is not highly technical and can be used as an operators manual, so that experimentalists at DST Group that have some knowledge of hot-wire anemometry will be able to use the system to obtain reliable turbulence data. References are given that will enable personnel to gain an in-depth understanding of different technical aspects of the use of hot-wire anemometers, if required.
- Fluid Mechanics
- Test Facilities, Equipment and Methods