Solving Helmholtz problems with the boundary element method using direct radial basis function interpolation

2015 ◽  
Vol 61 ◽  
pp. 218-225 ◽  
Author(s):  
Carlos Friedrich Loeffler ◽  
Webe João Mansur ◽  
Hércules de Melo Barcelos ◽  
André Bulcão
2021 ◽  
Vol 20 ◽  
pp. 159-170
Author(s):  
Krittidej Chanthawara ◽  
Sayan Kaennakham

The so-called Dual Reciprocity Boundary Element Method (DRBEM) has been a popular alternative scheme designed to alleviate problems encountered when using the traditional BEM for numerically solving engineering problems that are described by PDEs. The method starts with writing the right-hand-side of Poisson equation as a summation of a pre-chosen multivariate function known as ‘Radial Basis Function (RBF)’. Nevertheless, a common undesirable feature of using RBFs is the appearance of the so-called ‘shape parameter’ whose value greatly affects the solution accuracy. In this work, a new form of RBF containing no shape (so that it can be called ‘shapefree/shapeless’) is invented, proposed and applied in conjunction with DRBEM is validated numerically. The solutions obtained are compared against both exact ones and those presented in literature where appropriate, for validation. It is found that reasonably and comparatively good approximated solutions of PDEs can still be obtained without the difficulty of choosing a good shape for RBF used.


2016 ◽  
Vol 36 (3) ◽  
pp. 1192-1223 ◽  
Author(s):  
T. Veerakumar ◽  
Ravi Prasad K. Jagannath ◽  
Badri Narayan Subudhi ◽  
S. Esakkirajan

2000 ◽  
Vol 61 (5) ◽  
pp. 5967-5976 ◽  
Author(s):  
Xu-Guang Hu ◽  
Tak-San Ho ◽  
Herschel Rabitz ◽  
Attila Askar

2017 ◽  
Vol 3 (4) ◽  
pp. 56
Author(s):  
Tanja Kurzendorfer ◽  
Peter Fischer ◽  
Negar Mirshahzadeh ◽  
Thomas Pohl ◽  
Alexander Brost ◽  
...  

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