典型文献
Numerical test of scale relations for modelling coastal sandbar migration and inspiration to physical model design
文献摘要：
Physical model experiments on sandbar migration are widely conducted in the wave flume to reveal its hydro-sediment dynamic mechanisms.Selecting an appropriate scale relation is an important part of designing a laboratory experiment.However,evaluating the scale effect is complicated since it is impractical to design wave flume experiments based on strict geometry scales derived from the prototype beach or other laboratory beaches.Here,a process-based numerical model is used to test the Dean and Shields similitudes by comparing sandbar migration and sediment transport in different undistorted model scales using natural sediments.The numerical model provides excellent predictions for both offshore sandbar migration on a real-world beach and onshore sandbar migration in the wave flume.Consistent with previous studies,sandbar offshore migration and suspended sediment transport are similar when the Dean similitude is fulfilled.Sandbar onshore migration and bedload transport can be well reproduced only if the Shields similitude is achieved.Although previous laboratory experiments of sandbar migration generally used the Dean similitude,it is found that the Shields similitude is effective and indispensable for modelling sandbar onshore migration,which will be underestimated if the Dean similitude is only considered.Each scale relation cannot be used simultaneously for modelling both onshore and offshore sandbar migration in physical models.
文献关键词：
中图分类号：
作者姓名：
Yuan Li;Chi Zhang;Shan-hang Chi;Yun-han Yang;Jian Shi;Ti-ti Sui
作者机构：
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210024,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,China;State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China
文献出处：
引用格式：
[1]Yuan Li;Chi Zhang;Shan-hang Chi;Yun-han Yang;Jian Shi;Ti-ti Sui-.Numerical test of scale relations for modelling coastal sandbar migration and inspiration to physical model design)[J].水动力学研究与进展B辑,2022(04):700-711
A类：
sandbar,similitudes,undistorted,similitude,Sandbar,bedload
B类：
Numerical,test,relations,modelling,coastal,migration,inspiration,physical,Physical,experiments,are,widely,conducted,wave,flume,reveal,its,hydro,dynamic,mechanisms,Selecting,appropriate,important,part,designing,laboratory,However,evaluating,complicated,since,impractical,strict,geometry,scales,derived,from,prototype,other,beaches,Here,process,numerical,used,Dean,Shields,by,comparing,transport,different,using,natural,sediments,provides,excellent,predictions,both,offshore,real,world,onshore,Consistent,previous,studies,suspended,similar,when,fulfilled,well,reproduced,only,achieved,Although,generally,found,that,effective,indispensable,which,will,underestimated,considered,Each,cannot,simultaneously,models
AB值：
0.389912
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