Publications in Scientific Journals:
D. Boffi, L. Gastaldi, M. Ruggeri:
"Mixed formulation for interface problems with distributed Lagrange multiplier";
Computers and Mathematics with Applications,
68
(2014),
12;
2151
- 2166.
English abstract:
We study a mixed formulation for elliptic interface problems which has been recently introduced when dealing with a test problem arising from fluid-structure interaction applications. The formulation, which involves a Lagrange multiplier defined in the solid domain, can be approximated by standard finite elements on meshes which do not need to fit with the interface. In this paper we discuss a modification of the original formulation involving a different approach for the analysis and the numerical implementation of the Lagrange multiplier. New two-dimensional numerical results confirm the good performances of the proposed schemes.
Keywords:
interface problems, finite elements, fluid-structure interaction, Lagrange multiplier
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.camwa.2014.07.020
Created from the Publication Database of the Vienna University of Technology.