| WB法在三维声辐射中的应用 |
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| 引用本文： | 李志江,曹平,何锃. WB法在三维声辐射中的应用[J]. 武汉理工大学学报, 2012, 34(5): 131-134,148 |
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| 作者姓名： | 李志江 曹平 何锃 |
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| 作者单位： | 1. 中南大学资源与安全工程学院,长沙,410083
2. 华中科技大学力学系,武汉,430074 |
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| 摘 要： | 采用类似有限元处理无限域的方法,利用人工截断曲面将求解域分割成有界域和无界域,有界域再分割成凸形子域,在截断曲面内外分别定义可以表示声压场的波函数。通过连续性边界条件在人工截面上将内外子域联系起来,构造出可以求解的WB模型。算例表明,WB法比基于单元的方法计算效率更高。
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| 关 键 词： | 振动与声 声辐射 无限域 数值建模 |
Application of the Wave Based Method for Three Dimensional Sound Radiation Analysis |
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| LI Zhi-jiang , CAO Ping , HE Zeng. Application of the Wave Based Method for Three Dimensional Sound Radiation Analysis[J]. Journal of Wuhan University of Technology, 2012, 34(5): 131-134,148 |
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| Authors: | LI Zhi-jiang CAO Ping HE Zeng |
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| Affiliation: | 1.School of Resources and Safety Engineering,Central South University,Changsha 410083,China; 2.Department of Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Wave based method applies similar methodologies as the FE schemes for tackling problems in unbounded domains.A truncation surface is introduced which divides the unbounded domain into two regions,a bounded region and an unbounded region.The bounded region is partitioned into convex subdomains.Selection of appropriate wave functions within subdomains and enforcement of continuity conditions over the truncation surface between the bounded and unbounded region,yields a WB model which can be solved for the associated wave function contribution factors.Application of the proposed approach to various validation examples illustrates an enhanced computational efficiency as compared with element-based methods. |
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| Keywords: | vibro-acoustics sound radiation unbounded domains numerical modeling |
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