IMECH-IR  > 力学所知识产出(1956-2008)
复杂流动下泥沙起动概率的图像测量
Alternative TitleImage Measurement of the Probability of Sediment Incipience under Complex Flow
刘春嵘; 邓丽颖; 呼和敖德
Source Publication湖南大学学报. 自然科学版
2008-03-25
Volume35Issue:3Pages:24-27
ISSN1674-2974
Abstract提出了一种适合于复杂流动下泥沙起动概率的测量方法——图像测量法.该方法对床面上砂颗粒的运动图像进行采集,根据采集到的图像采用互相关算法计算出砂颗粒的运动速度,由砂颗粒运动速度得到泥沙的起动概率.采用该方法测量了槽道流动及后台阶流动2种情况下床面泥沙的起动概率.在槽道流动下,床面泥沙的起动概率随着床面剪应力的增大而增大.由本文测量方法得到的临界起动剪应力与希尔兹曲线所得到的结果相一致.在后台阶流动下,测量结果表明,再附点附近处泥沙的起动概率最大.这一结果能够解释在后台阶下游床面局部冲刷实验中发现的再附点附近冲刷最为严重的现象.
Keyword泥沙 起动概率 图像测量 局部冲刷
Indexed ByCSCD
Language中文
CSCD IDCSCD:3240871
Citation statistics
Cited Times:10[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/40438
Collection力学所知识产出(1956-2008)
Corresponding Author刘春嵘
Recommended Citation
GB/T 7714
刘春嵘,邓丽颖,呼和敖德. 复杂流动下泥沙起动概率的图像测量[J]. 湖南大学学报. 自然科学版,2008,35,3,:24-27.
APA 刘春嵘,邓丽颖,&呼和敖德.(2008).复杂流动下泥沙起动概率的图像测量.湖南大学学报. 自然科学版,35(3),24-27.
MLA 刘春嵘,et al."复杂流动下泥沙起动概率的图像测量".湖南大学学报. 自然科学版 35.3(2008):24-27.
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