Application of a fourth-order accurate finite-volume method with adaptive refinement in space and time to multifluid plasma simulations

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-28 DOI:10.2140/camcos.2024.19.57

Scott Polak, Xinfeng Gao

引用次数: 0

Abstract

A novel multifluid plasma model is developed, based on the finite-volume method, with a fourth-order accurate algorithm and solution-adaptive mesh refinement in space and time. Previously, the order of accuracy of the multifluid plasma model was verified and the solutions to common plasma test cases were demonstrated. In the present work, the multifluid plasma model is applied to solve complex test cases involving discontinuities and shocks. Discussion is thus focused on methods of numerical stabilization and strategies with adaptive mesh refinement. The results show improvements to solution stability and as much as an order of magnitude improvement in compute time due to adaptive mesh refinement.

查看原文本刊更多论文

在多流体等离子体模拟中应用空间和时间自适应细化的四阶精确有限体积法

以有限体积法为基础，利用四阶精确算法和空间与时间上的求解自适应网格细化，开发了一种新型多流体等离子体模型。在此之前，已经验证了多流体等离子体模型的精度阶次，并演示了常见等离子体测试案例的解决方案。在本研究中，多流体等离子体模型被应用于解决涉及不连续和冲击的复杂测试案例。因此，讨论的重点是数值稳定方法和自适应网格细化策略。结果表明，自适应网格细化提高了求解稳定性，计算时间缩短了一个数量级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.