【摘要】：Owing to its ability of modelling large deformations and the ease of dealing with moving boundary conditions,the material point method is gaining popularity in geotechnical engineering applications.In this paper,this promising Lagrangian method is applied to hydrodynamic problems to further explore its potential.The collapse of water columns with different initial aspect ratios is simulated by the material point method.In order to test the accuracy and stability of the material point method,simulations are first validated using experimental data and results of mature numerical models.Then,the model is used to ascertain the critical aspect ratio for the widely-used shallow water equations to give satisfactory approximation.From the comparisons between the simulations based on the material point method and the shallow water equations,the critical aspect ratio for the suitable use of the shallow water equations is found to be 1.
[Abstract]:Owing to its ability of modelling large deformations and the ease of dealing with moving boundary conditions,the material point method is gaining popularity in geotechnical engineering applications.In this paper,this promising Lagrangian method is applied to hydrodynamic problems to further explore its potential.The collapse of water columns with different initial aspect ratios is simulated by the material point method.In order to test the accuracy and stability of the material point method,simulations are first validated using experimental data and results of mature numerical models.Then,the model is used to ascertain the critical aspect ratio for the widely-used shallow water equations to give satisfactory approximation.From the comparisons between the simulations based on the material point method and the shallow water equations,the critical aspect ratio for the suitable use of the shallow water equations is found to be 1.
【作者單位】： Department
【基金】：supported by the European Union Seventh Framework Program(FP7/2007-2013) under grant agreement No.PIAG-GA-2012-324522 “MPM-DREDGE”
【分類號】：TV122.4

【相似文獻】

相關期刊論文 前4條

1 ;Nonlinear Effect of Wave Propagation in Shallow Water[J];China Ocean Engineering;1999年01期

2 徐福敏 ,嚴以新 ,張長寬 ,宋志堯 ,茅麗華;Wave Numerical Model for Shallow Water[J];China Ocean Engineering;2000年02期

3 Sameh A. KANTOUSH;Erik BOLLAERT;Anton J. SCHLEISS;;Experimental and numerical modelling of sedimentation in a rectangular shallow basin[J];International Journal of Sediment Research;2008年03期

4 ;[J];;年期

相關會議論文 前1條

1 Andrew YT Leung;;A New Approach on Simulating Two Dimensional Shallow-Water Flow with Uneven Bottom[A];第七屆全國水動力學學術會議暨第十九屆全國水動力學研討會文集（下冊）[C];2005年

，

本文編號：2283453