Abstract
A new technique for interpretation of hot-film anemometer sensor response is described. This technique has been applied to simultaneous measurement of profiles of mean velocity, the three components of velocity vector fluctuation, and temperature fluctuation in non-isothermal pipe flow of water using multiple sensors. Sensors operated in the constant temperature mode (CTA) respond to both mean and fluctuating velocity and temperature. The influence of mean temperature gradient on CTA sensor response was eliminated by appropriate adjustment of the sensors' operating resistances as the temperature gradient was traversed. The adjustments were derived from analysis of linearized CTA sensor response. A sensor operated as a resistance thermometer (CCA) responded to the mean temperature and temperature fluctuations and had negligible velocity response. Estimates of errors in the interpretation of responses are presented. Errors depend on the magnitude of the mean temperature gradient, sensors' coefficients of resistivity, and obedience to known cooling and yaw-sensitivity laws. Calculations are presented for uncoated 2-mil and 6-mil hot-film sensors. Examples of the application of this technique to the measurement of turbulence in water are presented.
Recommended Citation
Burchill, W. E. and Jones, B. G., "Interpretation of Hot-Film Anemometer Response in a Non-Isothermal Field" (1971). Symposia on Turbulence in Liquids. 72.
https://scholarsmine.mst.edu/sotil/72
Meeting Name
Symposium on Turbulence in Liquids (1971: Oct. 4-6, Rolla, MO)
Department(s)
Chemical and Biochemical Engineering
Document Type
Article - Conference proceedings
Presentation Type
Contributed Paper
Session
New Measurement Techniques
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1972 University of Missouri--Rolla, All rights reserved.
Publication Date
06 Oct 1971
