Absolute Low Speed Anemometer
- 1 October 1956
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 27 (10) , 844-848
- https://doi.org/10.1063/1.1715391
Abstract
An absolute anemometer suitable for measurements in gases under a wide variety of conditions is described. The instrument, based on an idea first used by Kovasznay, utilizes the temperature fluctuations in the wake of a sinusoidally heated fine wire as tracer. A second hot‐wire detects the fluctuations, and the phase change between two successive positions of this wire can be used to determine the free stream velocity. The technique is shown to have good spatial resolution and an accuracy better than 2% in the velocity range 40–400 cm/sec. Sources of error and various experimental conditions are discussed in detail.Keywords
This publication has 3 references indexed in Scilit:
- Flame Zone Studies by the Particle Track Technique. I. Apparatus and TechniqueThe Journal of Chemical Physics, 1954
- Hot-wire investigation of the wake behind cylinders at low Reynolds numbersProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1949
- On a determination of the pitot-static tube factor at low reynolds numbers, with special reference to the measurement of low air speedsProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1932