Integral equation methods for elliptic problems with boundary conditions of mixed type

Summary, in English

Laplace’s equation with mixed boundary conditions, that is, Dirichlet conditions on parts of the boundary and Neumann conditions on the remaining contiguous parts, is solved on an interior planar domain using an integral equation method. Rapid execution and high accuracy is obtained by combining equations which are of Fredholm’s second kind with compact operators on almost the entire boundary with a recursive compressed inverse preconditioning technique. Then an elastic problem with mixed boundary conditions is formulated and solved in an analogous manner and with similar results. This opens up for the rapid and accurate solution of several elliptic problems of mixed type.

• Author: Johan Helsing
• Department/s: Mathematics (Faculty of Engineering); Harmonic Analysis and Applications
• Publishing year: 2009
• Language: English
• Pages: 8892-8907
• Publication/Series: Journal of Computational Physics
• Volume: 228
• Issue: 23
• Full text: - 358 kB; Download statistics
• Links: http://www.maths.lth.se/na/staff/helsing/JCP09b.pdf; http://dx.doi.org/10.1016/j.jcp.2009.09.004
• Document type: Journal article
• Publisher: Elsevier
• Topic: Mathematics
• Keywords: Second kind integral equation; Elasticity; Mixed boundary value problem; Potential theory
• Status: Published
• Research group: Harmonic Analysis and Applications; Harmonic Analysis and Applications
• ISBN/ISSN/Other: ISSN: 0021-9991