Numerical modeling of local scour due to submerged wall jets using a strict vertex-based,terrain conformal,moving-mesh technique in OpenFOAM

作     者：Xiaohui Yan Abdolmajid Mohammadian Colin D.Rennie Xiaohui Yan;Abdolmajid Mohammadian;Colin D. Rennie

作者机构：Department of Civil EngineeringUniversity of Ottawa 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2020年第35卷第3期

页      面：237-248页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 

基　　金：funded by the Natural Sciences and Engineering Research Council of Canada(NSERC Discovery Grants) 

主　　题：Numerical modeling Sediment scour Submerged wall jets Moving mesh OpenFOAM Bed evolution 

摘      要：This study presents the implementation and validation of a new sediment-scour model with a strict vertex-based,terrain conformal,moving-mesh technique within the framework of *** lacks the ability to simulate large-amplitude motion needed for analysis of sediment-scour problems,and,thus,its application normally is restricted to small-amplitude cases to prevent computational divergence due to mesh *** proposed simple,moving-mesh technique in OpenFOAM is implemented to overcome the shortcomings of the conventional automatic mesh-motion techniques in handling large-amplitude moving *** model is used to simulate a simple case of prescribed boundary motion,a previous experiment in the literature,and a new laboratory experiment for local scour due to submerged wall *** results are compared with both the experimental and other numerical *** comparisons demonstrate that the proposed model has the novel advantage of allowing for more severe topographic variations,and can provide more reliable predictions for the key characteristics and evolution of the bed profiles in wall jet scour ***,to improve the practice of modeling wall jet scour,various turbulence modeling approaches and bedload equations also are evaluated and compared.