Journal
COMPUTATIONAL MECHANICS
Volume 38, Issue 4-5, Pages 310-322Publisher
SPRINGER
DOI: 10.1007/s00466-006-0084-3
Keywords
isogeometric analysis; NURBS; fluid-structure interaction; vascular modeling; Navier-Stokes equations; elastic arterial wall; mesh movement; blood flow
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A NURBS (non-uniform rational B-splines)-based isogeometric fluid-structure interaction formulation, coupling incompressible fluids with non-linear elastic solids, and allowing for large structural displacements, is developed. This methodology, encompassing a very general class of applications, is applied to problems of arterial blood flow modeling and simulation. In addition, a set of procedures enabling the construction of analysis-suitable NURBS geometries directly from patient-specific imaging data is outlined. The approach is compared with representative benchmark problems, yielding very good results. Computation of a patient-specific abdominal aorta is also performed, giving qualitative agreement with computations by other researchers using similar models.
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