Characteristics of Tornado-Like Vortices Simulated in a Large-Scale Ward-Type Simulator

Tang, Zhuo; Feng, Changda; Wu, Liang; Zuo, Dunwen; James, Darryl

doi:10.1007/s10546-017-0305-7

Cited by 60 publications

(14 citation statements)

References 33 publications

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“…The Rankine model has been adopted by a number of researchers (e.g. Hoecker, 1960;Church et al, 1979;Winn et al, 1999;Wurman and Gill, 2000;Brown and Wood, 2004;Lee et al, 2004;Mishra et al, 2008;Bech et al, 2009;Hashemi Tari et al, 2010;Wood and Brown, 2011;Refan and Hangan, 2016;Tang et al, 2017) to model tornado-like flow behaviour. The following assumptions are made in the derivation of the Rankine vortex model:…”

Section: Rankine Vortex Modelmentioning

confidence: 99%

“…However, it does not represent the vertical profile of the circumferential velocity observed in simulated tornado-like vortices or fullscale. For instance, Tang et al (2017) showed that increases rapidly in the lowest heights with the maximum circumferential velocity relatively close to the ground. With further increasing height ̅̅̅ decreases and remains relatively uniform in even greater heights.…”

Section: Circumferential Velocity Componentmentioning

confidence: 99%

“…In order to provide this type of datasets, the tornado-like flow field was modelled experimentally and/or numerically by several authors such as Ward, 1972;Church et al, 1979;Lewellen et al, 1997;Haan et al, 2008;Mishra et al, 2008;Natarajan, 2011;Sabareesh et al, 2012;Refan et al, 2014;Gillmeier et al, 2016;Liu and Ishihara, 2016;Nolan et al, 2017 andTang et al, 2017. An attempt to analytically model the three-dimensional flow in the boundary layer of a tornado-like vortex was made by Kuo (1971) by alternatingly solving the two nonlinear boundary-layer equations for the radial and vertical distribution of velocities.…”

Section: Introductionmentioning

confidence: 99%

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A reflection on analytical tornado-like vortex flow field models

Gillmeier

Sterling

Hemida

et al. 2018

Journal of Wind Engineering and Industrial Aerodynamics

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Section: Rankine Vortex Modelmentioning

confidence: 99%

Section: Circumferential Velocity Componentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A reflection on analytical tornado-like vortex flow field models

Gillmeier

Sterling

Hemida

et al. 2018

Journal of Wind Engineering and Industrial Aerodynamics

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“…• The large sized Texas Tech University (TTU) VorTECH facility, which is of a typical Ward type configuration, has an updraft 4m in diameter and a testing chamber 10.2m in diameter, with 64 turning vanes (Eguchi et al, 2018, Tang et al, 2018.…”

Section: Assessment Of Tvgsmentioning

confidence: 99%

Are Tornado Vortex Generators fit for purpose?

Baker

Sterling

2019

Journal of Wind Engineering and Industrial Aerodynamics

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“…The geometric configurations of M1 124 and S1 result in an aspect ratio of G a = 2 (Table 1a). It is noted that the aspect ratio is relatively large compared to the aspect ratios of simulators at Western University [22], Texas Tech University [19,24] and Iowa State University (18). However, the tornado simulator at Purdue University [32] and the original Ward simulator [16] allow the simulation of tornado-like vortices with similar aspect ratios.…”

Section: Introductionmentioning

confidence: 99%

Simulating tornado-like flows: the effect of the simulator’s geometry

2019

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Within the wind engineering community, a series of physical simulators of differing geometries have been used to investigate the flow-field of tornado-like vortices. This paper examines the influence that the geometry of a simulator can have on the generated flow field. Surface pressure and velocity data have been measured for two swirl ratios (S = 0.30 and S = 0.69) in two different simulators of different scale and varying geometry. The results of this research suggest that far from being a mature research field, there are still many unresolved questions that need to be addressed before data obtained from such simulators can be used with confidence in practice.

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Characteristics of Tornado-Like Vortices Simulated in a Large-Scale Ward-Type Simulator

Cited by 60 publications

References 33 publications

A reflection on analytical tornado-like vortex flow field models

A reflection on analytical tornado-like vortex flow field models

Are Tornado Vortex Generators fit for purpose?

Simulating tornado-like flows: the effect of the simulator’s geometry

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