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A feature-based mesh adaptation for the unsteady high speed compressible flows in complex three-dimensional domains

机译:基于特征的网格自适应,适用于复杂三维域中的非稳态高速可压缩流

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摘要

We propose an unstructured mesh adaptation approach for unsteady high speed compressible Navier-Stokes applications involving blasts and explosions with the presence of strong shock waves propagating in three dimensional complex domains. The idea is to identify the locations of critical physics locally and then re-mesh these regions based on solution derived metrics. The approach ensures both geometry fidelity and mesh validity, especially for areas near complex geometries, a task that is always a challenge in mesh adaptation. The proposed adaptivity is applied for simulations of blast wave propagations and compared with available data in literature. The results show that the proposed method is fully robust and efficient for computational fluid dynamics (CFD) problems in complex three-dimensional domains.
机译:我们针对涉及爆炸和爆炸的不稳定高速可压缩Navier-Stokes应用提出了一种非结构化网格自适应方法,其中存在在三维复数域中传播的强冲击波。这个想法是在本地确定关键物理的位置,然后根据解决方案派生的指标重新划分这些区域的网格。该方法可确保几何保真度和网格有效性,特别是对于复杂几何形状附近的区域,这是网格自适应中始终面临的挑战。所提出的适应性适用于爆炸波传播的模拟,并与文献中的可用数据进行了比较。结果表明,所提出的方法对于复杂的三维域中的计算流体动力学(CFD)问题是完全鲁棒且有效的。

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