National Taiwan Ocean University Institutional Repository:Item 987654321/12037
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27533/39387
Visitors : 2539132      Online Users : 31
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item:

Title: 對偶積分式於快速多重極架構下在聲學與潛堤斜向入射水波之應用
Applications of Fast Mulipole Method for Acoustics and Oblique Incident Water Wave
Authors: 陳正宗
Contributors: NTOU:Department of Harbor and River Engineering
Keywords: 水下聲學;斜向入射波;對偶積分;潛堤
Underwater acoustics;Oblique incident wave;Dual integral equation;Submerged breakwater
Date: 2002-08
Issue Date: 2011-06-29T01:37:57Z
Publisher: 行政院國家科學委員會
Abstract: abstract:In this report, we solve the large scale problems of the exterior acoustics and oblique incident water wave passing a submerged barrier by using the im-proved DBEM. By adopting the addition theorem, the four kernels in the dual formulation are expanded into degenerate kernels which separate the eld point and source point. The separable technique reduces the number of oating-point operations from O(N 2) to O(N loga(N)), where N is number of elements and a is a small constant independent of N. Finally, the FMM is shown to reduce CPU time and memory re-quirement thus enabling us apply BEM to solve for large-scale problems. Five moment FMM formula-tion was found to be sucient for convergence. The results are compared well with those of FEM, conven-tional BEM and analytical solutions and it shows the accuracy and eciency of the FMM when compared with the conventional BEM.
Relation: NSC91-2211-E019-010
Appears in Collections:[Department of Harbor and River Engineering] Research Reports

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback