An auto-adaptive moving mesh method for the numerical simulation of piping erosion

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• 作者：Yue Liang^a ; ^c ; Tian-Chyi Jim Yeh^b ; ^c ; ^{yeh@hwr.arizona.edu} ; Junjie Wang^a ; Mingwei Liu^a ; Yuanyuan Zha^d ; Yonghong Hao^b
• 关键词：Piping ; Flownet mesh ; Streamline tracing ; Finite volume method ; Auto-adaptivity
• 刊名：Computers and Geotechnics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：82
• 期：Complete
• 页码：237-248
• 全文大小：3093 K
• 卷排序：82

文摘

A numerical approach for simulating piping erosion is proposed based on an auto-adaptive moving mesh. This approach adapts a flownet mesh (FM) to discretize the domain. It reduces the simulation of two-dimensional transport of moving particles to one-dimensional problem by taking advantages of flow tube concept. Furthermore, it employs a stepwise procedure to decouple the solid-liquid interaction equations for modeling piping erosion. Specifically, the FM is updated and evolved automatically in accordance to simulated erosion since the flownet is refined in high-velocity regions, where the piping erosion progresses. Therefore, the FM is auto-adaptive to the piping erosion paths.