南水北调与水利科技2017，Vol.15Issue(4)：129-135,7.DOI:10.13476/j.cnki.nsbdqk.2017.04.021
河工模型试验加糙方法综述
Overview of roughening methods in river model experiments
摘要
Abstract
Resistance similarity is an essential requirement in river model experiments.Roughness recheck is affected by the target value,fluctuation amplitude,model material,and research emphasis.A reasonable roughening method will substantially improve the experiment efficiency and accuracy.In order to help researchers quickly choose a reasonable roughening way from the various existing methods,we sorted and reviewed the commonly used roughening methods,which were classified into three types:block-type roughening,strip-type roughening,and patch-type roughening.We introduced the commonly used roughening elements of each method and described in detail the realization means,advantages,drawbacks,and adjustable roughness range of each method.The patch-type roughening methods represented by plastic grass cushions can achieve a roughness value larger than 0.08.The block-type roughening methods represented by cross plates in the form of plum blossom can obtain a peak roughness value of about 0.06.The peak roughness value of strip-type roughening methods is 0.04.Sticking nylon nets or glass film and compact roughening can generally realize a roughness value no larger than 0.02.Digging pits on the model can hardly increase its surface roughness.In addition,this paper presents the methods′ application conditions,roughening ranges,and influence on flow structure,and some roughness calculation methods.It is hoped that with this paper,researchers can determine roughening methods quickly and exactly according to their experiment goals,and improve their research efficiency.关键词
模型试验/加糙方法/点块型加糙/条带型加糙/膜片型加糙Key words
model experiment/roughening method/block-type roughening/strip-type roughening/patch-type roughening分类
天文与地球科学引用本文复制引用
李甲振,郭永鑫,甘明生,许金鹏,付辉,黄伟..河工模型试验加糙方法综述[J].南水北调与水利科技,2017,15(4):129-135,7.基金项目
公益性行业科研专项(201501025) （201501025）
中国水科院科研专项(HY0145B642017 （）
HY0145B152015) （）
国家自然科学基金(51679263 （）
51609265) （）
国家重点研发计划(2016YFC0401808) Special Scientific Research Fund of Public Welfare Profession of China(201501025) （2016YFC0401808）
IWHR Research&Development Support Program(HY0145B642017 （）
HY0145B152015) （）
National Natural Science Foundation of China(51679263 （）
51609265) （）
The State Key Development Program(2016YFC0401808) （2016YFC0401808）
