Effects of aspect ratio on tornado-like vortices simulated in a large-scale tornado simulator

Zhuo Tang; Liang Wu; Changda Feng; Delong Zuo; Darryl James

Effects of aspect ratio on tornado-like vortices simulated in a large-scale tornado simulator

Zhuo Tang, Liang Wu, Changda Feng, Delong Zuo, Darryl James

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

Experiments were conducted in a large-scale Ward-type tornado simulator to study tornado-like vortices. Both flow velocities and the pressures at the surface beneath the vortices were measured. An interpretation of these measurements enabled an assessment of the mean flow field as well as the mean and fluctuating characteristics of the surface pressure deficit, which is a manifestation of the flow fluctuation aloft. An emphasis was placed on the effect of the aspect ratio of the tornado simulator on the characteristics of the simulated flow and the corresponding surface pressure deficit, especially the evolution of these characteristics due to the transition of the flow from a single-celled vortex to a two-celled vortex with increasing swirl ratio.

Original language	English
State	Published - 2017
Event	2017 13th Americas Conference on Wind Engineering, ACWE 2017 - Gainesville, United States Duration: May 21 2017 → May 24 2017

Conference

Conference	2017 13th Americas Conference on Wind Engineering, ACWE 2017
Country	United States
City	Gainesville
Period	05/21/17 → 05/24/17

Keywords

Aspect ratio
Surface pressure deficit
Swirl ratio
Tornado-like vortex

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title = "Effects of aspect ratio on tornado-like vortices simulated in a large-scale tornado simulator",

abstract = "Experiments were conducted in a large-scale Ward-type tornado simulator to study tornado-like vortices. Both flow velocities and the pressures at the surface beneath the vortices were measured. An interpretation of these measurements enabled an assessment of the mean flow field as well as the mean and fluctuating characteristics of the surface pressure deficit, which is a manifestation of the flow fluctuation aloft. An emphasis was placed on the effect of the aspect ratio of the tornado simulator on the characteristics of the simulated flow and the corresponding surface pressure deficit, especially the evolution of these characteristics due to the transition of the flow from a single-celled vortex to a two-celled vortex with increasing swirl ratio.",

keywords = "Aspect ratio, Surface pressure deficit, Swirl ratio, Tornado-like vortex",

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TY - CONF

T1 - Effects of aspect ratio on tornado-like vortices simulated in a large-scale tornado simulator

AU - Tang, Zhuo

AU - Wu, Liang

AU - Feng, Changda

AU - Zuo, Delong

AU - James, Darryl

PY - 2017

Y1 - 2017

N2 - Experiments were conducted in a large-scale Ward-type tornado simulator to study tornado-like vortices. Both flow velocities and the pressures at the surface beneath the vortices were measured. An interpretation of these measurements enabled an assessment of the mean flow field as well as the mean and fluctuating characteristics of the surface pressure deficit, which is a manifestation of the flow fluctuation aloft. An emphasis was placed on the effect of the aspect ratio of the tornado simulator on the characteristics of the simulated flow and the corresponding surface pressure deficit, especially the evolution of these characteristics due to the transition of the flow from a single-celled vortex to a two-celled vortex with increasing swirl ratio.

AB - Experiments were conducted in a large-scale Ward-type tornado simulator to study tornado-like vortices. Both flow velocities and the pressures at the surface beneath the vortices were measured. An interpretation of these measurements enabled an assessment of the mean flow field as well as the mean and fluctuating characteristics of the surface pressure deficit, which is a manifestation of the flow fluctuation aloft. An emphasis was placed on the effect of the aspect ratio of the tornado simulator on the characteristics of the simulated flow and the corresponding surface pressure deficit, especially the evolution of these characteristics due to the transition of the flow from a single-celled vortex to a two-celled vortex with increasing swirl ratio.

KW - Aspect ratio

KW - Surface pressure deficit

KW - Swirl ratio

KW - Tornado-like vortex

UR - http://www.scopus.com/inward/record.url?scp=85029786617&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85029786617

Y2 - 21 May 2017 through 24 May 2017

ER -