A method is presented for tracking interfaces, which is MOCL (marker on cell line) employed in two-dimensional Eulerian code. To test it, five kinds of objects with different shapes being uniform motion are numericall...
详细信息
A method is presented for tracking interfaces, which is MOCL (marker on cell line) employed in two-dimensional Eulerian code. To test it, five kinds of objects with different shapes being uniform motion are numerically simulated in a two- dimensional Eulerian hydrodynamics code that uses the MOCL technique to track interfaces. Results show that the method is simple and feasible.
无网格方法目前是流体力学数值模拟中的一种重要方法,对无网格方法的研究可以追溯到20世纪70年代,最初的尝试是在随机离散的节点上求解偏微分方程的近似解,即广义有限差分法。几乎在同时,Lucy和Gingold等分别提出了基于核估计方法的光滑粒子动力学方法(smooth particlehydrodynamics),并应用于天体物理和流体力学问题中。直到20世纪90年代,随着计算机技术的发展,无网格方法获得突飞猛进的进步。无网格方法的另一重要进展是Lancaster和Salfauskas提出的移动最小二乘无网格方法(moving least square approximation)及Belytschko等人提出的移动最小二乘
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