具有动壁面的三维复杂自由表面流动的稳定LSMPS

IF 6.9 1区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Computer Methods in Applied Mechanics and Engineering Pub Date : 2025-04-09 DOI:10.1016/j.cma.2025.117998

Xiaoxing Liu , Siwei He , Wei Huang , Xi Wang

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引用次数: 0

摘要

本文提出了一种稳定的LSMPS方法来模拟带有移动壁面的自由表面流动。在这种稳定LSMPS方法中，提出了一种新的壁面速度模型，用于速度散度计算和速度插值。该方法还将a型LSMPS和b型LSMPS结合使用，提高了准确性和稳定性。a型LSMPS方案用于内部粒子，b型LSMPS方案用于自由表面和亚自由表面粒子。此外，采用b型LSMPS插值粒子移动后的速度。通过在最小二乘矩阵的对角线元素中加入正值，增强了a型和b型方案的稳定性。为了验证所开发的LSMPS方法，进行了多次三维数值模拟。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A stabilized LSMPS for three-dimensional complex free-surface flow with moving wall

This study proposes a stabilized LSMPS method for simulating free surface flows with moving wall. In this stabilized LSMPS method, a novel wall velocity model is proposed for velocity divergence calculation and velocity interpolation. The proposed method also combines type-A and type-B LSMPS to enhance both accuracy and stability. Type-A LSMPS is applied to internal particles, while type-B scheme is used for free-surface and sub-free-surface particles. Additionally, type-B LSMPS is employed to interpolate the velocity after particle shifting. The stability of both type-A and type-B schemes is enhanced by the incorporation of positive values into the diagonal element of the least-squares matrix. To verify the developed LSMPS method, several three-dimensional numerical simulations are conducted.

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来源期刊

Computer Methods in Applied Mechanics and Engineering 工程技术-工程：综合

CiteScore

12.70

自引率

15.30%

发文量

719

审稿时长

44 days

期刊介绍： Computer Methods in Applied Mechanics and Engineering stands as a cornerstone in the realm of computational science and engineering. With a history spanning over five decades, the journal has been a key platform for disseminating papers on advanced mathematical modeling and numerical solutions. Interdisciplinary in nature, these contributions encompass mechanics, mathematics, computer science, and various scientific disciplines. The journal welcomes a broad range of computational methods addressing the simulation, analysis, and design of complex physical problems, making it a vital resource for researchers in the field.