Communications in Computational Physics最新文献_第7页

Ghost-Fluid-Based Sharp Interface Methods for Multi-Material Dynamics: A Review 基于鬼流体的多材料动力学锐界面方法综述

3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.re-2022-0189

Liang Xu null, Tiegang Liu

{"title":"Ghost-Fluid-Based Sharp Interface Methods for Multi-Material Dynamics: A Review","authors":"Liang Xu null, Tiegang Liu","doi":"10.4208/cicp.re-2022-0189","DOIUrl":"https://doi.org/10.4208/cicp.re-2022-0189","url":null,"abstract":". The ghost fluid method (GFM) provides a simple way to simulate the interaction of immiscible materials. Especially, the modified GFM (MGFM) and its variants, based on the solutions of multi-material Riemann problems, are capable of faithfully taking into account the effects of nonlinear wave interaction and material property near the interface. Reasonable treatments for ghost fluid states or interface conditions have been shown to be crucial when applied to various interfacial phenomena involving large discontinuity and strong nonlinearity. These methods, therefore, have great potential in engineering applications. In this paper, we review the development of such methods. The methodologies of representative GFM-based algorithms for definition of interface conditions are illustrated and compared to each other. The research progresses in design principle and accuracy analysis are briefly described. Some steps and techniques for multi-dimensional extension are also summarized. In addition, we present some progresses in more challenging scientific problems, including a variety of fluid/solid-fluid/solid interactions with complex physical properties. Of course the challenges faced by researchers in this field are also discussed.","PeriodicalId":50661,"journal":{"name":"Communications in Computational Physics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135145606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Stable Arbitrarily High Order Time-Stepping Method for Thermal Phase Change Problems 热相变问题的稳定任意高阶时间步进方法

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2022-0183

Wei Wang null, Chuanju Xu

引用次数: 0

High-Order Local Discontinuous Galerkin Method with Multi-Resolution WENO Limiter for Navier-Stokes Equations on Triangular Meshes 三角网格上Navier-Stokes方程的高阶局部不连续Galerkin方法

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2022-0096

Yizhou Lu, Jun Zhu, S. Cui, Zhenming Wang, Linlin Tian null, N. Zhao

引用次数: 0

A Correction and Comments on “Multi-Scale Deep Neural Network (MscaleDNN) for Solving Poisson-Boltzmann Equation in Complex Domains CiCP, 28(5):1970–2001,2020” 对“求解复域Poisson-Boltzmann方程的多尺度深度神经网络（MscaleDNN）”的修正和评论CiCP，28（5）：1970–20012020

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2023-0152

Lulu Zhang, Wei Cai null, Z. Xu

引用次数: 1

Sixth-Order Compact Finite Difference Method for 2D Helmholtz Equations with Singular Sources and Reduced Pollution Effect 具有奇异源和减少污染效应的二维Helmholtz方程的六阶紧致有限差分方法

3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2023-0062

Qiwei Feng, Bin Han null, Michelle Michelle

{"title":"Sixth-Order Compact Finite Difference Method for 2D Helmholtz Equations with Singular Sources and Reduced Pollution Effect","authors":"Qiwei Feng, Bin Han null, Michelle Michelle","doi":"10.4208/cicp.oa-2023-0062","DOIUrl":"https://doi.org/10.4208/cicp.oa-2023-0062","url":null,"abstract":"Due to its highly oscillating solution, the Helmholtz equation is numerically challenging to solve. To obtain a reasonable solution, a mesh size that is much smaller than the reciprocal of the wavenumber is typically required (known as the pollution effect). High order schemes are desirable, because they are better in mitigating the pollution effect. In this paper, we present a high order compact finite difference method for 2D Helmholtz equations with singular sources, which can also handle any possible combinations of boundary conditions (Dirichlet, Neumann, and impedance) on a rectangular domain. Our method achieves a sixth order consistency for a constant wavenumber, and a fifth order consistency for a piecewise constant wavenumber. To reduce the pollution effect, we propose a new pollution minimization strategy that is based on the average truncation error of plane waves. Our numerical experiments demonstrate the superiority of our proposed finite difference scheme with reduced pollution effect to several state-of-the-art finite difference schemes, particularly in the critical pre-asymptotic region where $textsf{k} h$ is near $1$ with $textsf{k}$ being the wavenumber and $h$ the mesh size.","PeriodicalId":50661,"journal":{"name":"Communications in Computational Physics","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135145208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Adaptive Ensemble Kalman Inversion with Statistical Linearization 统计线性化自适应集合卡尔曼反演

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2023-0012

Yanyan Wang, Qiang Li null, Liang Yan

引用次数: 0

Adaptive Multi-Resolution Method for 3D Reactive Flows with Level Set Front Capturing 具有水平集前沿捕获的三维反应流自适应多分辨率方法

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2022-0122

Wenhua Ma, Dongmi Luo, W. Ying, Guoxi Ni, M. null, Yibing Chen

引用次数: 0

Quantum Implementation of Numerical Methods for Convection-Diffusion Equations: Toward Computational Fluid Dynamics 对流扩散方程数值方法的量子实现:走向计算流体动力学

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2022-0081

Bofeng Liu, Lixing Zhu, Zixuan Yang null, Guowei He

引用次数: 0

Frozen Gaussian Approximation for the Dirac Equation in Curved Space with Application to Strained Graphene Dirac方程在弯曲空间中的冻结高斯逼近及其在应变石墨烯中的应用

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2021-0209

L. Chai, Lorin Emmanuel null, Xu Yang

引用次数: 2

Analysis of Discontinuity Detectors and Hybrid WCNS Schemes Based on Waveform Recognition 基于波形识别的不连续检测器和混合WCNS方案分析

IF 3.7 3区物理与天体物理

Communications in Computational Physics Pub Date : 2023-06-01 DOI: 10.4208/cicp.oa-2023-0080

Hao Zhang, Yidao Dong, Shichao Zheng null, Xiaogang Deng

{"title":"Analysis of Discontinuity Detectors and Hybrid WCNS Schemes Based on Waveform Recognition","authors":"Hao Zhang, Yidao Dong, Shichao Zheng null, Xiaogang Deng","doi":"10.4208/cicp.oa-2023-0080","DOIUrl":"https://doi.org/10.4208/cicp.oa-2023-0080","url":null,"abstract":". In this paper, we present a hybrid form of weighted compact nonlinear scheme (WCNS) for hyperbolic conservation laws by applying linear and nonlinear methods for smooth and discontinuous zones individually. To fulfill this algorithm, it is inseparable from the recognition ability of the discontinuity detector adopted. In specific, a troubled-cell indicator is utilized to recognize unsmooth areas such as shock waves and contact discontinuities, while avoiding misjudgments of smooth structures. Some classical detectors are classified into three basic types: derivative combination, smoothness indicators and characteristic decomposition. Meanwhile, a new improved detector is proposed for comparison. Then they are analyzed through identifying a series of waveforms firstly. After that, hybrid schemes using such indicators, as well as different detection variables, are examined with Euler equations, so as to investigate their ability to distinguish practical discontinuities on various levels. Simulation results demonstrate that the proposed algorithm has similar performances to pure WCNS, while it generally saves 50 percent of CPU time for 1D cases and about 40 percent for 2D Euler equations. Current research is in the hope of providing some reference and establishing some standards for judging existing discontinuity detectors and developing novel ones.","PeriodicalId":50661,"journal":{"name":"Communications in Computational Physics","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48515102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0