# Numerical simulation of a pulsatile flow through a flexible channel

• Volume: 40, Issue: 6, page 1101-1125
• ISSN: 0764-583X

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## Abstract

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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.

## How to cite

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Murea, Cornel Marius. "Numerical simulation of a pulsatile flow through a flexible channel." ESAIM: Mathematical Modelling and Numerical Analysis 40.6 (2007): 1101-1125. <http://eudml.org/doc/194346>.

@article{Murea2007,
abstract = { 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. },
author = {Murea, Cornel Marius},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis},
keywords = {Fluid-structure interaction; Navier-Stokes equations; Arbitrary Lagrangian Eulerian Method.; fluid-structure interaction; arbitrary Lagrangian Eulerian method.},
language = {eng},
month = {2},
number = {6},
pages = {1101-1125},
publisher = {EDP Sciences},
title = {Numerical simulation of a pulsatile flow through a flexible channel},
url = {http://eudml.org/doc/194346},
volume = {40},
year = {2007},
}

TY - JOUR
AU - Murea, Cornel Marius
TI - Numerical simulation of a pulsatile flow through a flexible channel
JO - ESAIM: Mathematical Modelling and Numerical Analysis
DA - 2007/2//
PB - EDP Sciences
VL - 40
IS - 6
SP - 1101
EP - 1125
AB - 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.
LA - eng
KW - Fluid-structure interaction; Navier-Stokes equations; Arbitrary Lagrangian Eulerian Method.; fluid-structure interaction; arbitrary Lagrangian Eulerian method.
UR - http://eudml.org/doc/194346
ER -

## References

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