Analysis of high-speed train flow structures under crosswind

被引：9

作者：

Avadiar, Terence ^{[1
]}

Bell, James ^{[1
]}

Burton, David ^{[1
]}

Cormaty, Heman ^{[1
]}

Li, Chao ^{[1
]}

机构：

[1] Monash Univ, Dept Mech & Aerosp Engn, Bldg 31, Clayton, Vic 3800, Australia

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2016年 / 30卷 / 09期

关键词：

Aerodynamics; Boundary layer; Crosswind; Flow structures; Flow visualization; High-speed train; Wind tunnel;

D O I：

10.1007/s12206-016-0810-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The flow structures along the length of a High-Speed Train (HST) are experimentally investigated under simulated crosswind conditions. The experiment uses flow visualizations and velocity measurements in a wind tunnel on a HST model at various angles of yaw. Surface visualizations shows the development of a longitudinal vortex, originating at the nose which travels along the leeward side of the train. A hypothesis is presented and tested proposing flow structures may repeat when the Boundary layer (BL) on the roof of the HST reaches maximum development or is "pushed off". A key motivation is to evaluate the validity of using shortened HST models in a wind tunnel to correctly represent full-length trains. Using this theory, a shortened train model appears unable to completely model full-scale HSTs at realistic yaw angles.

引用

页码：3985 / 3991

页数：7

共 11 条

[1] Bell J., 2014, AUSTR FLUID MECH C
[2] Wind tunnel analysis of the slipstream and wake of a high-speed train
Bell, J. R.
Burton, D.
Thompson, M.
Herbst, A.
Sheridan, J.
[J]. JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2014, 134 : 122 - 138
[3] Bureau of Meteorology, 2015, WIND ROS MELB
[4] THE 3-DIMENSIONAL FLOW AROUND RAILWAY TRAINS
COPLEY, JM
[J]. JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 1987, 26 (01) : 21 - 52
[5] UNSTEADY-FLOW PHENOMENA OVER DELTA-WINGS AT HIGH-ANGLE OF ATTACK
GURSUL, I
[J]. AIAA JOURNAL, 1994, 32 (02) : 225 - 231
[6] Hemida H., 2005, 17 AIAA COMP FLUID D
[7] Johnson T., 2004, AERODYNAMICS HEAVY V, P415
[8] Muld G. E., 2014, J RAIL RAPID TRANSIT, V228, P333
[9] A study of the slipstreams of high-speed passenger trains and freight trains
Sterling, M.
Baker, C. J.
Jordan, S. C.
Johnson, T.
[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT, 2008, 222 (02) : 177 - 193
[10] Tfi Catalogue, 2015, CAT SECT COBR PROB

← 1 2 →