کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
518206 867565 2014 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Inexact accurate partitioned algorithms for fluid–structure interaction problems with finite elasticity in haemodynamics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Inexact accurate partitioned algorithms for fluid–structure interaction problems with finite elasticity in haemodynamics
چکیده انگلیسی

In this paper we consider the numerical solution of the three-dimensional fluid–structure interaction problem in haemodynamics, in the case of real geometries, physiological data and finite elasticity vessel deformations. We study some new inexact schemes, obtained from semi-implicit approximations, which treat exactly the physical interface conditions while performing just one or few iterations for the management of the interface position and of the fluid and structure non-linearities. We show that such schemes allow to improve the efficiency while preserving the accuracy of the related exact (implicit) scheme. To do this we consider both a simple analytical test case and two real cases of clinical interest in haemodynamics. We also provide an error analysis for a simple differential model problem when a BDF method is considered for the time discretization and only few Newton iterations are performed at each temporal instant.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 273, 15 September 2014, Pages 598–617
نویسندگان
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