A study of the effect of local scour on the flow field near the spur dike

作     者：Yu-Tian Li Jie-Min Zhan Wing-Hong Onyx Wai Yu-Tian Li;Jie-Min Zhan;Wing-Hong Onyx Wai

作者机构：Department of Industrial DesignSchool of Industrial Design and Ceramic ArtFoshan UniversityFoshan 528000China Department of Applied Mechanics and EngineeringShenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China Department of Civil and Environmental EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2024年第14卷第2期

页      面：98-105页

核心收录：

学科分类：081504[工学-水利水电工程] 08[工学] 0815[工学-水利工程] 

基　　金：supported by Shenzhen Science and Technology Program(Grant No.JCYJ20220818102012024) Hong Kong Research Grants Council(Grant Nos.T21–602/16-R and RGC R5037–18) 

主　　题：Spur dike Local scour Large eddy simulation Down flow Horseshoe vortex system 

摘      要：The flow field near a spur dike such as down flow and horseshoe vortex system(HVS)are susceptible to the topographic changes in the local scouring process,resulting in variation of the sediment transport with *** this study,large eddy simulations with fixed-bed at different scouring stages were conducted to investigate the changes in flow *** results imply that the bed deformation leads to an increase in flow rate per unit area,which represent the capability of sediment transportation by water,in the scour ***,the intensity of turbulent kinetic energy and bimodal motion near the sand bed induced by the HVS were also ***,the peak moments between the two sediment transport mechanisms were ***,understanding the complex feedback mechanism between topography and flow field is essential for the local scour problem.