Title
On Trefftz' integral equation for the Bernoulli free boundary value problem.
Abstract
We propose a new numerical method for the solution of Bernoulli's free boundary value problem for a harmonic function w in a doubly connected domain D in $$\\mathbb {R}^2$$R2 where an unknown free boundary $$\\varGamma _0$$Γ0 is determined by prescribed Cauchy data of w on $$\\varGamma _0$$Γ0 in addition to a Dirichlet condition on the known boundary $$\\varGamma _1$$Γ1. Our method is based on a two-by-two system of boundary integral equations for the unknown boundary $$\\varGamma _0$$Γ0 and the unknown normal derivative $$g=\\partial _\\nu w$$g=źźw of w on $$\\varGamma _1$$Γ1. This system is nonlinear with respect to $$\\varGamma _0$$Γ0 and linear with respect to g and we suggest to solve it simultaneously for $$\\varGamma _0$$Γ0 and g by Newton iterations. We establish a local convergence result and exhibit the feasibility of the method by a few numerical examples.
Year
DOI
Venue
2017
10.1007/s00211-016-0847-5
Numerische Mathematik
Keywords
Field
DocType
31A10, 35R35, 65R20, 76B07
Boundary value problem,Mathematical optimization,Harmonic function,Mathematical analysis,Dirichlet boundary condition,Integral equation,Local convergence,Numerical analysis,Directional derivative,Mathematics,Bernoulli's principle
Journal
Volume
Issue
ISSN
136
2
0945-3245
Citations 
PageRank 
References 
1
0.43
1
Authors
1
Name
Order
Citations
PageRank
David Colton13315.98