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A regular boundary element method for fluid flow
Author(s) -
Patterson C.,
Sheikh M. A.
Publication year - 1982
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.1650020303
Subject(s) - inviscid flow , laminar flow , boundary knot method , boundary element method , mathematics , singular boundary method , method of fundamental solutions , finite element method , discretization , mathematical analysis , boundary (topology) , no slip condition , geometry , mixed boundary condition , mechanics , physics , thermodynamics
The Boundary Element Method is now well established as a valid numerical technique for the solution of field problems, equal to the Finite Element Method in generality and surpassing it in computational efficiency in some cases. 1 In this paper is presented a 'Regular Boundary Element Method' as applied to inviscid laminar fluid flow problems. It involves the formation of a system of regular integral equations obtained by moving the singularity outside the domain of the given problem. It is also shown that non‐conforming elements may be used whereby freedoms are not defined at the geometric nodes under the boundary element discretization. A linear element is developed here; higher order variants could easily be defined. Satisfactory numerical results have been obtained using the proposed regular method with both conventional (continuous across the boundary) and non‐conforming boundary elements for two‐dimensional inviscid laminar fluid flow problems having regular and singular solutions.