Emergence of a barchan belt in a unidirectional flow: Experiment and numerical simulation

被引：16
|
作者：
Katsuki, A [1 ]
Kikuchi, M
Endo, N
机构：
[1] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[2] Osaka Univ, Cybermedia Ctr, Toyonaka, Osaka 5600043, Japan
[3] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 03期
关键词：
sand dune; barchan; transverse ripple; dune field; water tank experiment; numerical simulation;
D O I：
10.1143/JPSJ.74.878
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We observed the time evolution of dune fields in a water tank experiment and simulated it by using a simple model without taking complex fluid dynamics into account. The initial sand bed changed its form to transverse ripples, that is, dunes with straight crest lines perpendicular to the flow direction. Then crescentic dunes, called barchans, evolved from transverse ripples.
引用
收藏
页码：878 / 881
页数：4
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