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首页> 外文期刊>Computer Modeling in Engineering & Sciences >A Dual-Support Smoothed Particle Hydrodynamics for Weakly Compressible Fluid Inspired By the Dual-Horizon Peridynamics
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A Dual-Support Smoothed Particle Hydrodynamics for Weakly Compressible Fluid Inspired By the Dual-Horizon Peridynamics

机译：双支持平滑的粒子流体动力学，用于闭锁性的弱可压缩液

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A dual-support smoothed particle hydrodynamics (DS-SPH) that allows variable smoothing lengths while satisfying the conservations of linear momentum, angular momentum and energy is developed. The present DS-SPH is inspired by the dual-support, a concept introduced from dual-horizon peridynamics from the authors and applied here to SPH so that the unbalanced interactions between the particles with different smoothing lengths can be correctly considered and computed. Conventionally, the SPH formulation employs either the influence domain or the support domain. The concept of dual-support identifies that the influence domain and the support domain involves the duality and should be simultaneously in the SPH formulation when variable smoothing lengths are used. The DS-SPH formulation can be implemented into conventional SPH codes with minimal changes and also without compromising the computational efficiency. A number of numerical examples involving weakly compressible. fluid are presented to demonstrate the capability of the method.
机译：双支持平滑的粒子流体动力学（DS-SPH），允许变平滑长度，同时满足线性动量，角动量和能量的节约。目前的DS-SPH受到双重支持的启发，这是一种从作者那里介绍的概念，并且在这里施加到SPH，使得可以正确地考虑和计算具有不同平滑长度的颗粒之间的不平衡相互作用。通常，SPH配方使用影响结构域或支撑结构域。双重支持的概念识别影响结构域和支撑结构域涉及二元性，并且当使用可变平滑长度时，应在SPH配方中同时。 DS-SPH配方可以在传统的SPH码中实现，具有最小的变化，并且也没有损害计算效率。许多涉及弱可压缩的数值例子。提出了流体以证明该方法的能力。

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