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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50438

Title: Analytical derivation and numerical experiment of degenerate scale by using the degenerate kernel of the bipolar coordinates
Authors: Chen Jeng-Tzong
Kao Shing-Kai
Lee Jia-Wei
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: Degenerate scale
Degenerate kernel
Bipolar coordinates
Eccentric annulus
Date: 2017-12
Issue Date: 2018-10-08T06:08:22Z
Publisher: Engineering Analysis with Boundary Elements
Abstract: Abstract: Degenerate scales of an eccentric annulus and an infinite plane with two identical circular holes in the boundary integral equation method (BIEM) are analytically derived and numerically implemented in this paper. To analytically study the degenerate scale of the BIE, the closed-form fundamental solution of the two-dimensional Laplace equation, ln r, is expanded by a degenerate (separate) kernel in terms of the bipolar coordinates. It is proved that unit radius of the outer circle dominates the degenerate scale of eccentric annulus. An analytical formula of degenerate scale for the infinite plane with two identical circular boundaries was also derived at the first time. In addition, null fields of the domain and complementary domain for the ordinary and degenerate scales are both shown, respectively. Finally, comparison with available results and the BEM data are well done.
Relation: 85 pp.70-86
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50438
Appears in Collections:[河海工程學系] 期刊論文

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