An alternative approach to experimental simulation of wind characteristics in urban environments

Kozmar, Hrvoje (2011) An alternative approach to experimental simulation of wind characteristics in urban environments. = An alternative approach to experimental simulation of wind characteristics in urban environments. In: Urban Environmental Pollution 2010, 20-23.6.2010., Boston, MA; United States.

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Abstract

The classical Counihan vortex generators for wind-tunnel simulations of the atmospheric boundary layer (ABL) flow were redesigned to experimentally simulate natural wind characteristics in urban environments. Three redesigned (truncated) vortex generators, a castellated barrier wall and a fetch of roughness elements were employed to reproduce a lower portion of the neutrally stratified ABL developing above an urban type terrain. A hot-wire anemometry system was used to measure mean velocity and velocity fluctuations. Investigated parameters were mean velocity, turbulence intensity, integral length scale of turbulence, and power spectral density of velocity fluctuations. Experimental results indicate that the truncated vortex generators developed for this study can be successfully employed in urban ABL part-depth wind-tunnel simulations, as they compare well with commonly applied empirical models and wind specifications for urban type terrain given in the ESDU 74031 data sheets. © 2011 Published by Elsevier BV.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Alternative approach; Data sheets; Empirical model; Experimental simulations; Hot-wire anemometry; Integral length scale of turbulence; Mean velocities; Natural wind; Neutrally stratified; Roughness elements; Turbulence intensity; Urban environments; Velocity fluctuations; Vortex generators; Wind characteristics; Wind-tunnel simulation; Anemometers; Atmospheric movements; Atmospheric thermodynamics; Atmospherics; Boundary layer flow; Flow simulation; Landforms; Pollution; Power spectral density; Transport aircraft; Troposphere; Turbulence; Urban planning; Velocity; Vortex flow; Wind tunnels; Wire; Atmospheric boundary layer
Subjects: TECHNICAL SCIENCE
Divisions: 500 Department of Energy, Power Engineering and Environment > 520 Chair of Fluid Mechanics
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (22.4.2015.)
Date Deposited: 22 Apr 2015 08:00
Last Modified: 29 May 2017 12:15
URI: http://repozitorij.fsb.hr/id/eprint/3813

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