Accession Number : AD0629719

Title :   TURBULENCE MEASUREMENTS WITH INCLINED HOT-WIRES,

Descriptive Note : Doctoral thesis,

Corporate Author : BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH FLIGHT SCIENCES LAB

Personal Author(s) : Champagne,F. H.

Report Date : DEC 1965

Pagination or Media Count : 168

Abstract : The results of the heat transfer and temperature distribution measurements indicate that an inclined hot-wire is sensitive to the tangential velocity component along the wire. The temperature distribution measurements indicate that inclined and normal wires have nearly identical end conduction losses, although the temperature distribution on an inclined wire is slightly asymmetrical. Therefore, the deviation from the cosine law is caused by an increase in the convection heat loss attributable to the tangential component of velocity. The sensitivity of an inclined hot-wire to the tangential velocity component must be taken into consideration when interpreting hot-wire data in terms of velocity components of a flow field. The wire is best calibrated directly at all desired yaw angles.

Descriptors :   (*TURBULENCE, MEASUREMENT), (*THERMODYNAMICS, ANEMOMETERS), HEAT TRANSFER, TEMPERATURE, DISTRIBUTION, CONVECTION(HEAT TRANSFER), VELOCITY, CALIBRATION

Subject Categories : Test Facilities, Equipment and Methods
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE