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Mathematical modelling and numerical solution of swelling of cartilaginous tissues. Part I: Modelling of incompressible charged porous media
- Source :
- ESAIM : Mathematical Modelling and Numerical Analysis, 41(4), 661-678. EDP Sciences
- Publication Year :
- 2007
-
Abstract
- The swelling and shrinkage of biological tissues are modelled by a four-component mixture theory in which a deformable and charged porous medium is saturated with a fluid with dissolved ions. Four components are defined: solid, liquid, cations and anions. The aim of this paper is the construction of the Lagrangian model of the four-component system. It is shown that, with the choice of Lagrangian description of the solid skeleton, the motion of the other components can be described in terms of Lagrangian initial system of the solid skeleton as well. Such an approach has a particularly important bearing on computer-aided calculations. Balance laws are derived for each component and for the whole mixture. In cooperation of the second law of thermodynamics, the constitutive equations are given. This theory results in a coupled system of nonlinear parabolic differential equations together with an algebraic constraint for electroneutrality. In this model, it is desirable to obtain an accurate approximation of the fluid flow and ions flow. Such an accurate approximation can be determined by the mixed finite element method. Part II is devoted to this task.Mathematics Subject Classification. 76S05, 74B05, 74F10Key words: Mixture theory, porous media, hydrated soft tissue.
- Subjects :
- Numerical Analysis
Differential equation
Applied Mathematics
Constitutive equation
0211 other engineering and technologies
Geometry
02 engineering and technology
Mixed finite element method
Mechanics
01 natural sciences
Finite element method
010101 applied mathematics
Mixture theory
Computational Mathematics
Nonlinear system
Modeling and Simulation
Fluid dynamics
0101 mathematics
Porous medium
Analysis
021101 geological & geomatics engineering
Mathematics
Subjects
Details
- ISSN :
- 0764583X
- Volume :
- 41
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- ESAIM : Mathematical Modelling and Numerical Analysis
- Accession number :
- edsair.doi.dedup.....3eef4824d86c443337ea442dbdf76eb6