A model for wall shear stress estimation in abdominal aortic aneurysms using POD

Abstract eng:
In this work, a reduced-order model (ROM) is constructed to study the physiological flow and wall stress conditions for abdominal aortic aneurysms. The method of snapshot Proper Orthogonal Decomposition (POD) is used to construct the reduced-order bases based on a series of CFD results, which are then improved using a QR-factorization technique to satisfy the various boundary conditions in physiological flow problems. This method can effectively construct a computationally efficient FSI model, which allows us to examine a large range of physiological flow parameters.

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