Vorticity budget of a tornado-like vortex

被引：0

作者：

Sassa, Koji ^{[1
]}

Takemura, Saki ^{[1
]}

机构：

[1] Kochi Univ, Dept Appl Sci, Kochi, Japan

来源：

13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): VORTICITY DYNAMICS | 2011年 / 318卷

关键词：

SIMULATION;

D O I：

10.1088/1742-6596/318/6/062020

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We evaluated the vorticity budget of a tornado-like vortex by measuring vertical and horizontal circulations of it. Though spiral horizontal vortices are clearly observed to converge and tilted into the tornado-like vortex, their circulation is quite small. The conversion of the vertical vorticity concentrated at the side of the spiral horizontal vortices was found to mainly contribute to the maintenance of the tornado-like vortex.

引用

页数：6

共 10 条

[1] CHURCH CR, 1977, B AM METEOROL SOC, V58, P900, DOI 10.1175/1520-0477(1977)058<0900:TVSAPU>2.0.CO
[2] 2
[3] Design, construction and performance of a large tornado simulator for wind engineering applications
Haan, Fred L., Jr.
Sarkar, Partha P.
Gallus, William A.
[J]. ENGINEERING STRUCTURES, 2008, 30 (04) : 1146 - 1159
[4] ITO J, 2010, THESIS TOKYO U
[5] Klemp B. J., 1983, J ATMOS SCI, V40, P359
[6] STRUCTURE OF TURBULENT BOUNDARY LAYERS
KLINE, SJ
REYNOLDS, WC
SCHRAUB, FA
RUNSTADLER, PW
[J]. JOURNAL OF FLUID MECHANICS, 1967, 30 : 741 - +
[7] Numerical Simulation of Tornadogenesis in an Outer-Rainband Minisupercell of Typhoon Shanshan on 17 September 2006
Mashiko, Wataru
Niino, Hiroshi
Kato, Teruyuki
[J]. MONTHLY WEATHER REVIEW, 2009, 137 (12) : 4238 - 4260
[8] A new scaling for tornado-like vortices
Nolan, DS
[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES, 2005, 62 (07) : 2639 - 2645
[9] SASSA K., 2007, ADV TURBULENCE, VXI, P364
[10] The 30 May 1998 Spencer, South Dakota, storm. Part II: Comparison of observed damage and radar-derived winds in the tornadoes
Wurman, J
Alexander, CR
[J]. MONTHLY WEATHER REVIEW, 2005, 133 (01) : 97 - 119

← 1 →