Normal Mode Analysis of the Nonlinear Acoustic Wave Equation

Q3 Multidisciplinary

Walailak Journal of Science and Technology Pub Date : 2013-10-31 DOI:10.2004/WJST.V11I4.366

M. Othman, Mohamed Galal Sayed Ali, R. M. Farouk

引用次数: 0

Abstract

Second-harmonic generation in non-linear media is investigated. A normal mode analysis is proposed based on the Westervelt equation under the second-order approximation in nonlinear acoustics. This model takes into consideration attenuation, diffraction and nonlinear effects, together with dispersion. The fundamental and second harmonic is examined. The derived method is evaluated by 2-D analytical formulas which apply to tissue medium. doi: 10.14456/WJST.2014.48

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非线性声波方程的正态分析

研究了非线性介质中二次谐波的产生。基于二阶近似下的Westervelt方程，提出了非线性声学中的正态模态分析方法。该模型考虑了衰减、衍射和非线性效应以及色散。检查了基谐波和二次谐波。用适用于组织介质的二维解析公式对该方法进行了评价。doi: 10.14456 / WJST.2014.48

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来源期刊

Walailak Journal of Science and Technology Multidisciplinary-Multidisciplinary

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

24 weeks

期刊介绍： The Walailak Journal of Science and Technology (Walailak J. Sci. & Tech. or WJST), is a peer-reviewed journal covering all areas of science and technology, launched in 2004. It is published 12 Issues (Monthly) by the Institute of Research and Innovation of Walailak University. The scope of the journal includes the following areas of research : - Natural Sciences: Biochemistry, Chemical Engineering, Chemistry, Materials Science, Mathematics, Molecular Biology, Physics and Astronomy. -Life Sciences: Allied Health Sciences, Biomedical Sciences, Dentistry, Genetics, Immunology and Microbiology, Medicine, Neuroscience, Nursing, Pharmaceutics, Psychology, Public Health, Tropical Medicine, Veterinary. -Applied Sciences: Agricultural, Aquaculture, Biotechnology, Computer Science, Cybernetics, Earth and Planetary, Energy, Engineering, Environmental, Food Science, Information Technology, Meat Science, Nanotechnology, Plant Sciences, Systemics