特征法在浅水中波浪传播的二维模拟

IF 0.6 4区物理与天体物理 Q4 ACOUSTICS

Archives of Acoustics Pub Date : 2023-07-20 DOI:10.24425/aoa.2022.142014

M. Khalilabadi

{"title":"特征法在浅水中波浪传播的二维模拟","authors":"M. Khalilabadi","doi":"10.24425/aoa.2022.142014","DOIUrl":null,"url":null,"abstract":"In this paper, a 2D numerical modeling of sound wave propagation in a shallow water medium that acts as a waveguide, are presented. This modeling is based on the method of characteristic which is not constrained by the Courant–Friedrichs–Lewy (CFL) condition. Using this method, the Euler time-dependent equations have been solved under adiabatic conditions inside of a shallow water waveguide which is consists of one homogeneous environment of water over a rigid bed. In this work, the stability and precision of the method of characteristics (MOC) technique for sound wave propagation in a waveguide were illustrated when it was applied with the semi-Lagrange method. The results show a signiﬁcant advantage of the method of characteristics over the ﬁnite diﬀerence time domain (FDTD) method.","PeriodicalId":8149,"journal":{"name":"Archives of Acoustics","volume":" ","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"2D Modeling of Wave Propagation in Shallow Water by the Method of Characteristics\",\"authors\":\"M. Khalilabadi\",\"doi\":\"10.24425/aoa.2022.142014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, a 2D numerical modeling of sound wave propagation in a shallow water medium that acts as a waveguide, are presented. This modeling is based on the method of characteristic which is not constrained by the Courant–Friedrichs–Lewy (CFL) condition. Using this method, the Euler time-dependent equations have been solved under adiabatic conditions inside of a shallow water waveguide which is consists of one homogeneous environment of water over a rigid bed. In this work, the stability and precision of the method of characteristics (MOC) technique for sound wave propagation in a waveguide were illustrated when it was applied with the semi-Lagrange method. The results show a signiﬁcant advantage of the method of characteristics over the ﬁnite diﬀerence time domain (FDTD) method.\",\"PeriodicalId\":8149,\"journal\":{\"name\":\"Archives of Acoustics\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2023-07-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Archives of Acoustics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.24425/aoa.2022.142014\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ACOUSTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of Acoustics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.24425/aoa.2022.142014","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ACOUSTICS","Score":null,"Total":0}

引用次数: 0

摘要

本文提出了声波在浅水介质中作为波导传播的二维数值模拟。该建模基于特征方法，不受Courant–Friedrichs–Lewy（CFL）条件的约束。利用这种方法，求解了浅水波导内部绝热条件下的欧拉时变方程，该波导由刚性床上的一个均匀水环境组成。在这项工作中，说明了特征方法（MOC）技术在波导中传播的稳定性和精度，当它与半拉格朗日方法相结合时。结果表明，与有限差分时域（FDTD）方法相比，特征法具有显著优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

2D Modeling of Wave Propagation in Shallow Water by the Method of Characteristics

In this paper, a 2D numerical modeling of sound wave propagation in a shallow water medium that acts as a waveguide, are presented. This modeling is based on the method of characteristic which is not constrained by the Courant–Friedrichs–Lewy (CFL) condition. Using this method, the Euler time-dependent equations have been solved under adiabatic conditions inside of a shallow water waveguide which is consists of one homogeneous environment of water over a rigid bed. In this work, the stability and precision of the method of characteristics (MOC) technique for sound wave propagation in a waveguide were illustrated when it was applied with the semi-Lagrange method. The results show a signiﬁcant advantage of the method of characteristics over the ﬁnite diﬀerence time domain (FDTD) method.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Archives of Acoustics 物理-声学

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Archives of Acoustics, the peer-reviewed quarterly journal publishes original research papers from all areas of acoustics like: acoustical measurements and instrumentation, acoustics of musics, acousto-optics, architectural, building and environmental acoustics, bioacoustics, electroacoustics, linear and nonlinear acoustics, noise and vibration, physical and chemical effects of sound, physiological acoustics, psychoacoustics, quantum acoustics, speech processing and communication systems, speech production and perception, transducers, ultrasonics, underwater acoustics.