Augmented Lagrangian simulations study of yield-stress fluid flows in expansion-contraction and comparisons with physical experiments

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• 作者：Arthur Marly ; Paul Vigneaux ; ^{Paul.Vigneaux@math.cnrs.fr}
• 关键词：Viscoplastic flows ; Bingham fluid ; Expansion-contraction geometry ; Yielded boundary layer ; Augmented Lagrangian methods ; Finite-Differences ; Parallel multifrontal solver
• 刊名：Journal of Non-Newtonian Fluid Mechanics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：239
• 期：Complete
• 页码：35-52
• 全文大小：4318 K
• 卷排序：239

文摘

Fast parallelized 2D Finite-Differences Augmented Lagrangian Bingham code. Simulations on very fine structured meshes with very demanding convergence criteria compared to previous literature. Providing all internal computational costs for benchmarking. Successful comparison of the code with 2 kinds of physical experiments in cavities. Detailed pseudo-plug zones and dead zones’ horizontal lengths.