engleski

OpenFOAM solver for fluid-structure interaction in arteries

Most common fluid-structure interaction (FSI) applications in biomedical research involve blood flow in arteries. Such FSI simulations require significant computational effort leading to a never-ending quest for computationally more efficient numerical algorithms. This paper describes a self-contained, partitioned FSI solver based on a finite volume discretisation which can be applied to calculate the interaction between blood and the aortic wall where both continuums are treated as incompressible. Laminar flow of an incompressible fluid is described by the Navier– Stokes equations in arbitrary Lagrangian–Eulerian form while solid deformation is described by the incompressible neo-Hookean hyperelastic material model in the total Lagrangian form. Both fluid and solid are discretised in space using the second- order accurate cell-centred finite volume method, and temporal discretisation is performed using the second-order accurate implicit backward scheme.

OpenFOAM, solids4foam, FSI, FVM, block-coupled, added-mass partitioned, aorta, incompressible

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