CHARACTERISTICS OF HELICOID ANEMOMETERS
An experimental study of the overspeeding error for helicoid anemometers in periodic air flows is described. The ranges of amplitude and frequency for which a simple nonlinear model for the dynamic response of such instruments remains valid are presented. It is shown that the model is valid for typical atmospheric applications of such instruments. A simple method is presented whereby the effects of inertial lag and nonlinearity may be taken into account in obtaining measurements of alongwind power spectra in the atmosphere.
- See also report dated Nov 75, PB-246 861. Sponsored in part by Federal Highway Administration, Washington, DC. Structures and Applied Mechanics Div.
National Bureau of StandardsGaithersburg, MD United States
Washington, DC United States 20590
- McMichael, J M
- Cleveland, W G
- Publication Date: 1978-8
- Pagination: 17 p.
- TRT Terms: Air; Anemometers; Dynamic loads; Errors; Flow; Mathematical models; Power spectra; Reaction time; Unsteady flow; Velocity; Wind
- Uncontrolled Terms: Air flow; Dynamic response
- Old TRIS Terms: Wind velocity
- Subject Areas: Materials;
- Accession Number: 00191073
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NBSIR-78-1505, NBS2130482
- Files: NTIS, USDOT
- Created Date: Apr 25 2002 12:00AM