Full-scale flow measurement on a tall building with a continuous-wave Doppler Lidar anemometer

Lim, E, Watkins, S, Clothier, R, Ladani, R, Mohamed, A and Palmer, J 2016, 'Full-scale flow measurement on a tall building with a continuous-wave Doppler Lidar anemometer', Journal of Wind Engineering and Industrial Aerodynamics, vol. 154, pp. 69-75.


Document type: Journal Article
Collection: Journal Articles

Title Full-scale flow measurement on a tall building with a continuous-wave Doppler Lidar anemometer
Author(s) Lim, E
Watkins, S
Clothier, R
Ladani, R
Mohamed, A
Palmer, J
Year 2016
Journal name Journal of Wind Engineering and Industrial Aerodynamics
Volume number 154
Start page 69
End page 75
Total pages 7
Publisher Elsevier BV
Abstract While building aerodynamics have been widely studied, most investigations have been conducted in wind tunnels or through computational simulation. Full-scale experiments are least common, as they are usually costly, require significant time and effort and are subject to uncontrolled meteorological conditions. This research examines the feasibility of using a continuous-wave Doppler Lidar, as opposed to traditional experimental instrumentation for flow measurements around full-scale buildings. The normalised mean velocities and the turbulence intensities measured around a full-size, nominally cuboid building in suburban terrain were compared to results from Cobra multi-hole pressure probes mounted on the full-size building and from a 1/100-scale wind-tunnel test. The normalised mean velocities measured in the tests were within 2% of each other; however, the turbulence intensities obtained from the wind-tunnel experiments were 2-6% higher than the nominal value of 14% measured in the full-scale testing. These effects appeared mainly due to the relatively low sampling frequency of the Lidar, combined with the spatial averaging over a relatively large area. It was concluded that Lidar instrumentation shows promise for characterising the flowfield around full-scale buildings, if the scanning cone angle can be reduced and the sampling rate increased.
Subject Aerodynamics (excl. Hypersonic Aerodynamics)
Photodetectors, Optical Sensors and Solar Cells
Aircraft Performance and Flight Control Systems
Keyword(s) Building aerodynamics
Continuous wave
Doppler Lidar
Full-scale testing
Wind-tunnel testing
DOI - identifier 10.1016/j.jweia.2016.04.007
Copyright notice © 2016 Elsevier Ltd
ISSN 0167-6105
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