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首页> 外文期刊>Mathematics and computers in simulation >A new and improved cut-cell-based sharp-interface method for simulating compressible fluid elastic-perfectly plastic solid interaction
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A new and improved cut-cell-based sharp-interface method for simulating compressible fluid elastic-perfectly plastic solid interaction

机译:一种新的和改进的基于剪切单元的锐界面方法,用于模拟可压缩流体的弹性-完全塑性固体相互作用

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摘要

In this work, a new integrated, conservative and consistent cut-cell-based sharp-interface method is developed to simulate compressible multi-material problems with various interfaces. In the proposed method, the material interfaces are represented by quadratic-curve cut faces evolved with the help of the level set equation. Multiple level set functions are applied to address multiple interfaces. The system is mainly developed in Eulerian coordinates with the cut faces moving in a Lagrangian manner, thus, it benefits from a Lagrangian moving interface in terms of accuracy and handles large deformations more conveniently than those works in a Lagrangian framework. Clear improvements in robustness and accuracy over the modified ghost fluid method can be observed in various 2D test cases.
机译:在这项工作中,开发了一种新的,集成的,一致的,基于切单元的一致尖锐界面方法,以模拟具有各种界面的可压缩多材料问题。在所提出的方法中,材料界面由借助水平集方程演化的二次曲线切割面表示。多级别设置功能适用于寻址多个接口。该系统主要在欧拉坐标系中开发,且切面以拉格朗日方式移动,因此,该系统得益于拉格朗日移动界面的准确性,并且比拉格朗日框架中的工作更方便地处理大变形。在各种2D测试案例中,可以观察到与改进的幻影流体方法相比,鲁棒性和准确性有了明显的提高。

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