Journal of Applied Science and Engineering

Published by Tamkang University Press

1.30

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2.10

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Shuyang Cao1, Jin Wang2,3 and Jinxin Cao This email address is being protected from spambots. You need JavaScript enabled to view it.4

1State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, P.R. China
2Department of Bridge Engineering, Tongji University, Shanghai, P.R. China
3Glenn Department of Civil Engineering, Clemson University, SC, USA
4State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, P.R. China


 

Received: February 22, 2016
Accepted: July 4, 2016
Publication Date: September 1, 2016

Download Citation: ||https://doi.org/10.6180/jase.2016.19.3.06  

ABSTRACT


Current wind-resistant design of wind-sensitive structures including large-scale cooling towers is generally carried out with respect to synoptic boundary-layer-type strong winds. A swirling tornado can produce significantly different wind pressures than conventional boundary-layer wind. This paper presents both stationary and translating tornado effects on a cooling tower in a tornado vortex simulator developed at Tongji University, China. Wind pressures acting on the external surface of cooling tower model were measured at a fixed swirl ratio (S = 0.54) in the present study. Different radial distances between a cooling tower and stationary tornado vortex center were considered. Translating tornadoes with three different translation speeds (u = 0.04 m/s, 0.12 m/s and 0.2 m/s) were simulated. The results show that a tornado vortex can produce high negative wind pressures on a cooling tower surface due to the negative pressure drop accompanying a tornado. A cooling tower exposed to a tornado experiences combined effects of pressure drop accompanying a tornado and aerodynamic flow-structure interaction.


Keywords: Tornado Vortex, Cooling Tower, Wind Pressure, Aerodynamics


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