用于快速稳健求解超薄流固耦合问题的周期性双混合法

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-10-11 DOI:10.1016/j.triboint.2024.110316

Xiaolong Zhang, Junhui Zhang, Bing Xu, Chao Zhang

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引用次数: 0

摘要

本研究提出的周期性双混合法（PDMM）可以快速、稳健地解决超薄流固耦合（UTFSI）问题，尤其是严重混合润滑问题。双混合表示一个两步过程：第一步是根据最优混合权重分别混合历史输入和输出；第二步将得到的结果与动态阻尼因子混合，以预测下一次迭代的变形。同时，在预测的变形中定期注入残差。与一般 FSI 中常用的 IQN-ILS 方法进行了对比研究，结果表明 PDMM 方法的速度是 IQN-ILS 方法的 5.3 倍，鲁棒性是 IQN-ILS 方法的 5 倍。此外，在苛刻的混合润滑条件下，PDMM 的优势更为显著。

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Periodic dual-mixing method for fast and robust solving of ultra-thin fluid-structure interaction problems

This study proposes the periodic dual-mixing method (PDMM) that can rapidly and robustly solve ultra-thin fluid-structure interaction (UTFSI) problems, especially in severe mixed lubrication. The dual mixing denotes a two-step process: the first step is to mix the historical inputs and outputs separately according to optimal mixing weights; the obtained results are mixed with dynamic damping factors in the second step to predict the deformation of the next iteration. Meanwhile, the residual is injected into the predicted deformation periodically. The comparison study is carried out with the popular IQN-ILS method in general FSI, which shows the PDMM is 5.3 times faster and 5 times more robust. Furthermore, the advantages of the PDMM are more significant under harsh mixed lubrication conditions.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.