An algorithm for approximation of an unsteady fluid-structure interaction problem is proposed. The fluid is governed by the Navier-Stokes equations with boundary conditions on pressure, while for the structure a particular plate model is used. The algorithm is based on the modal decomposition and the Newmark Method for the structure and on the Arbitrary lagrangian Eulerian coordinates and the Finite Element Method for the fluid. In this paper, the continuity of the stresses at the interface was treated by the Least Squares Method. At each time step we have to solve an optimization problem which permits us to use moderate time step. This is the main advantage of this approach. In order to solve the optimization problem, we have employed the Broyden, Fletcher, Goldforb, Shano Method where the gradient of the cost function was approached by the Finite Difference Method. Numerical results are presented.
Mots-clés : fluid-structure interaction, Navier-Stokes equations, arbitrary lagrangian eulerian method
@article{M2AN_2006__40_6_1101_0, author = {Murea, Cornel Marius}, title = {Numerical simulation of a pulsatile flow through a flexible channel}, journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique}, pages = {1101--1125}, publisher = {EDP-Sciences}, volume = {40}, number = {6}, year = {2006}, doi = {10.1051/m2an:2007003}, mrnumber = {2297106}, language = {en}, url = {http://archive.numdam.org/articles/10.1051/m2an:2007003/} }
TY - JOUR AU - Murea, Cornel Marius TI - Numerical simulation of a pulsatile flow through a flexible channel JO - ESAIM: Modélisation mathématique et analyse numérique PY - 2006 SP - 1101 EP - 1125 VL - 40 IS - 6 PB - EDP-Sciences UR - http://archive.numdam.org/articles/10.1051/m2an:2007003/ DO - 10.1051/m2an:2007003 LA - en ID - M2AN_2006__40_6_1101_0 ER -
%0 Journal Article %A Murea, Cornel Marius %T Numerical simulation of a pulsatile flow through a flexible channel %J ESAIM: Modélisation mathématique et analyse numérique %D 2006 %P 1101-1125 %V 40 %N 6 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/m2an:2007003/ %R 10.1051/m2an:2007003 %G en %F M2AN_2006__40_6_1101_0
Murea, Cornel Marius. Numerical simulation of a pulsatile flow through a flexible channel. ESAIM: Modélisation mathématique et analyse numérique, Tome 40 (2006) no. 6, pp. 1101-1125. doi : 10.1051/m2an:2007003. http://archive.numdam.org/articles/10.1051/m2an:2007003/
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