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Frequency response requirements for fluctuating wind pressure measurements


Letchford, CW and Sandri, P and Levitan, MC and Mehta, KC, Frequency response requirements for fluctuating wind pressure measurements, Journal of Wind Engineering & Industrial Aerodynamics, 40, (3) pp. 263-276. ISSN 0167-6105 (1992) [Refereed Article]

DOI: doi:10.1016/0167-6105(92)90379-O


The frequency response requirements for measuring fluctuating wind pressures were examined by analysing full scale data collected at the Texas Tech Wind Engineering Field Research Laboratory It was found that mean peak pressures adjacent to separation and reattachment points were attenuated when the instrumentation frequency response was below 10 Hz for mean wind speeds of 10 m/s. This corresponds to a full scale wavelength of 1 m. For pressures away from these regions and for area-averaged pressures, the cut-off wavelength was higher. A reasonable collapse of the available data for response ratios under separated flow was obtained indicating that attenuation of mean peak pressures could be expected for V ncB>0.1 (mean reference velocity V, cut-off frequency nc and smallest building plan dimennsion B). These findings have implications for the frequency response of wind tunnel model studies investigating peak pressure distributions. © 1992.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Other engineering
Research Field:Other engineering not elsewhere classified
Objective Division:Construction
Objective Group:Construction planning
Objective Field:Civil construction planning
UTAS Author:Letchford, CW (Professor Chris Letchford)
ID Code:47500
Year Published:1992
Web of Science® Times Cited:14
Deposited By:Engineering
Deposited On:2007-09-15
Last Modified:2011-11-18

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