3-DIMENSIONAL FULLY-DEVELOPED SHALLOW-WATER FLOW IN MILDLY CURVED BENDS

被引:11
作者
IKEDA, S
YAMASAKA, M
KENNEDY, JF
机构
[1] Department of Civil Engineering, Tokyo Institute of Technology, Meguro, Tokyo
[2] Department of Civil Engineering, Kanazawa Institute of Technology, Kanazawa
关键词
D O I
10.1016/0169-5983(90)90059-8
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A mathematical model which describes three-dimensional fully developed flow in mildly curved open channel is developed. The side-wall boundary layers are included in the analysis, and the normal component of the secondary current is constrained to be zero at the side walls. It is found that the advective transport of fluid momentum due to the secondary current induces accumulation of primary-flow (streamwise) fluid momentum near the outer bank. The analysis makes it possible to analyze the curvature-induced excess of shear stress at the outer bank. The model is well supported by available laboratory data. © 1990.
引用
收藏
页码:155 / 173
页数:19
相关论文
共 22 条
[1]  
Cochran, The flow due to a rotating disc, Mathematical Proceedings of the Cambridge Philosophical Society, 30, pp. 365-375, (1934)
[2]  
De Vriend, Koch, Flow of Water in a Curved Open Channel with a Fixed Plane Bed, Delft Univ. Technol. TOW Rep. R657-VJ/M1415-I, (1977)
[3]  
De Vriend, Velocity redistribution in curved rectangular channels, J. Fluid Mech., 107, pp. 423-439, (1981)
[4]  
De Vriend, Steady Flow in Shallow Channel Bends, Ph.D. Thesis, (1981)
[5]  
Engelund, Flow and bed topography in channel bends, ASCE J. Hydr. Div., 100, pp. 1637-1648, (1974)
[6]  
Falcon-Ascanio, Analysis of Flow on Alluvial Channel Bends, Ph.D. Thesis, (1974)
[7]  
Hasegawa, Universal bank erosion coefficient for meandering rivers, J. Hydraulic Eng. ASCE, 115, pp. 744-765, (1989)
[8]  
Hickin, The development of meanders in natural river channels, American Journal of Science, 274, pp. 414-442, (1974)
[9]  
Ikeda, Parker, Sawai, Bend theory of river meanders. Part 1. Linear development, J. Fluid Mech., 112, pp. 363-377, (1981)
[10]  
Ishikawa, Kim, A basic study on the development of secondary circulation in curved channels, Proc. Japan Soc. Civil Eng., 375, pp. 143-149, (1986)