INVESTIGATION OF THE FLOW-FIELD AND THE STARTING CONDITIONS OF WIND-INDUCED EROSION OF THE RAILWAY EMBANKMENT

被引：7

作者：

ZHANG, J

CUI, E

FU, G

机构：

[1] Beijing Institute of Aerodynamics, 100074 Beijing

来源：

JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS | 1995年 / 54卷

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0167-6105(94)00073-M

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Wind-induced erosion and deposition of an embankment are investigated using a numerical approach. The underlying mechanism is analyzed. Starting from the N-S equations, employing the SIMPLE algorithm in the computational plane, the flow field around a railway embankment in a windy district is simulated. It shows that the Re number and shear intensity of the incoming wind and the profile of the embankment have significant influence on the flow field. By introducing a K-epsilon turbulence model, the distribution of the friction velocity on the wall along the surface of the standard and the eroded embankment at high Re numbers are calculated. A procedure to determine the erosion-starting wind speed is proposed.

引用

页码：573 / 581

页数：9