A TURBULENCE PROBE UTILIZING AERODYNAMIC LIFT,
Abstract
The concept of a new-type of anemometer for measuring the cross-stream or 'v'-component of turbulent velocity is presented. Basic theory concerning the response characteristics of the so-called 'aerofoil probe' is discussed. Steps in the development of a satisfactory prototype of the 'aerofoil probe' are outlined. Various problems concerning resonant frequencies, accelerometric effects, low-frequency response fall-off, and the effect of finite aerofoil size were encountered, and these are described in detail. A method of dynamic calibration employing a square-wave turbulence simulator is outlined. Various experimental data accumulated from measurements in a low-speed turbulent air jet are presented. These include velocity measurements, frequency spectra, autocorrelations, and two point space-time correlations. Comparisons with hot-wire data are made wherever possible. Conclusions are drawn as to feasibility of using the aerofoil probe in preference to hot-wire techniques for turbulence measurements. Limitations of both techniques are compared. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- AD0627572
Entities
People
- T. E. Siddon
Organizations
- University of Toronto