@Article{CiCP-34-2, author = {Zhiqiang, Zeng and Feng, Chengliang and Zhang, Xiaotao and Zhang, Shengtao and Tiegang, Liu}, title = {A Genuinely Two-Dimensional HLL-Type Approximate Riemann Solver for Hypo-Elastic Plastic Flow}, journal = {Communications in Computational Physics}, year = {2023}, volume = {34}, number = {2}, pages = {318--356}, abstract = {
In this work, a genuinely two-dimensional HLL-type approximate Riemann solver is proposed for hypo-elastic plastic flow. To consider the effects of wave interaction from both the $x$- and $y$-directions, a corresponding 2D elastic-plastic approximate solver is constructed with elastic-plastic transition embedded. The resultant numerical flux combines one-dimensional numerical flux in the central region of the cell edge and two-dimensional flux in the cell vertex region. The stress is updated separately by using the velocity obtained with the above approximate Riemann solver. Several numerical tests, including genuinely two-dimensional examples, are presented to test the performances of the proposed method. The numerical results demonstrate the credibility of the present 2D approximate Riemann solver.
}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2022-0314}, url = {https://global-sci.com/article/79369/a-genuinely-two-dimensional-hll-type-approximate-riemann-solver-for-hypo-elastic-plastic-flow} }