Comparison of wind speed and turbulence measurements made by a hot-film probe and a bivane in the atmospheric surface layer

Conference · Tue Apr 30 00:00:00 EDT 1974

OSTI ID:4350716

SethuRaman, S; Brown, R M

Two independent systems for determining wind speed and turbulence levels are being used in an on-shore diffusion study on Long Island near Brookhaven National Laboratory. Results obtained from the two instrument systems are compared to illustrate the differences in the measured values of the vector wind, mean wind speed, variance, turbulence level and energy spectra. Details of the physical characteristics and relative advantages of a commercial Vector Vane and a three-dimensional hot-film sensor are also presented. Measurements of the mean wind speed and the turbulence level compared well. The Vector Vane underestimated spectral densities for frequencies above 1 hertz. (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y. (USA)
• NSA Number: NSA-29-015784
• OSTI ID: 4350716
• Report Number(s): BNL-18431; CONF-731205-4
• Resource Relation: Conference: American Chemical Society 2nd joint conference on sensing of environmental pollutants, Washington, District of Columbia, USA, 10 Dec 1973; Other Information: Orig. Receipt Date: 30-JUN-74
• Country of Publication: United States
• Language: English

Related Subjects

N46400* -Instrumentation-Miscellaneous Instruments
N44500 -Environmental & Earth Sciences-Site Surveys
*ANEMOMETERS- PERFORMANCE
CALIBRATION
COMPARATIVE EVALUATIONS
OPERATION