WIT Press


Computing Efficient Approximations To BEM Integrals

Price

Free (open access)

Paper DOI

10.2495/BE970641

Volume

19

Pages

10

Published

1997

Size

883 kb

Author(s)

R.N.L. Smith and N. Stringfellow

Abstract

We discuss efficient and simple methods for boundary element integrals. An efficient algorithm for non-singular integration is described and execution times given for two Fortran 90 compilers. A new class of Gauss routines for logarithmic integrals is shown to be more effective than other quadrature schemes. Introduction Integration schemes for the direct boundary element method are now typ- ically reliable and accurate, although they may not always be as efficient and well-coded as might be considered desirable. With the advent of itera- tive schemes which promise considerable improvements in equation solution times, the time spent in integration may be increasingly important. Inte- gration time is proportional to n* where n is the number of nodes and the constant of proporti

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