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An Improved Specified Finite Particle Method and Its Application to Transient Heat Conduction

机译:改进的指定有限颗粒方法及其在瞬态导热的应用

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摘要

Compared with the traditional Smoothed Particle Hydrodynamics (SPH), Finite Particle Method (FPM) has higher accuracy for boundary region. However, there are still two inherent defects which are the time consuming and the numerical instability in FPM. In this paper, a high-order algorithm based on the Taylor series expansion and the matrix theory is proposed and the corresponding particles selected mode is discussed. It is validated that the algorithm has higher-order accuracy than the previous low-order improvement algorithm for FPM. Further, transient heat conduction examples have been discussed to verify the feasibility and effectiveness of the new algorithm.
机译:与传统的平滑粒子流体动力学(SPH)相比,有限颗粒法(FPM)对边界区域具有更高的准确度。 然而,仍然存在两个固有的缺陷,这是FPM中的耗时和数值不稳定性。 本文提出了一种基于泰勒级膨胀和矩阵理论的高阶算法,并讨论了相应的粒子选择模式。 它经过验证的是,该算法比FPM的前一级低阶改善算法具有更高的精度。 此外,已经讨论了瞬态热传导示例以验证新算法的可行性和有效性。

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