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Physical Simulation of a Single-Celled Tornado-Like Vortex, Part A: Flow Field Characterization


Mishra, AR and James, DJ and Letchford, CW, Physical Simulation of a Single-Celled Tornado-Like Vortex, Part A: Flow Field Characterization, Journal of Wind Engineering and Industrial Aerodynamics, 96, (40429) pp. 1243-1257. ISSN 0167-6105 (2008) [Refereed Article]

DOI: doi:10.1016/j.jweia.2008.02.063


Tornado vortex simulation is described and a new simulator is presented. Radial, tangential, and vertical velocity measurements together with surface static pressure measurements are presented and compared with available data from the Manchester and Spencer, South Dakota tornadoes of May 30, 1998, and June 24, 2003, respectively. Comparisons of the surface pressure profile and tangential velocity decay showed good agreement with the TTU simulation. Analytically, the simulated velocity decay is found to be similar to that of a modified Rankine combined vortex with a variable exponent that changed with height. The simulator is demonstrated as a viable device for determining wind loading on building models in tornado-like vortex flows, and such results are presented in Part B. © 2008 Elsevier Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Fluid mechanics and thermal engineering
Research Field:Turbulent flows
Objective Division:Environmental Management
Objective Group:Air quality, atmosphere and weather
Objective Field:Atmospheric processes and dynamics
UTAS Author:Letchford, CW (Professor Chris Letchford)
ID Code:55004
Year Published:2008
Web of Science® Times Cited:41
Deposited By:Centre for Renewable Power Energy Systems
Deposited On:2009-03-04
Last Modified:2009-09-03

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