Talk by Helena Švihlová & Jaroslav Hron

The next seminar “Modelling of materials – theory, model reduction and efficient numerical methods” will take place next Monday (December 16, 2019) in the room K2 from 9:00 till 10:00. The talk will be given by Helena Švihlová and Jaroslav Hron. Please see the details below.

Speaker: Helena Švihlová and Jaroslav Hron

Title: Computational study of hemodynamical flow in cerebral aneurysms and common carotid artery

Abstract: We will give overview of two hemodynamical flow problems, namely the flow in cerebral aneurysm and flow in common carotid artery, where the medical community can benefit from the knowledge of the flow fields. In both cases it is well well established that hemodynamics has a significant role in possible further evolution of unphysiological conditions, like growth or rupture of the aneurysm or growth or deposit of a plaque in the carotid artery.

We will present assumptions and limitations of the models used in CFD computations as well as the potential benefits in a clinical practice in a near future. We will discuss the limitations at different levels of the blood flow modeling and our experience with setup of computational methods using academic open source computational tools (PETSc, FEniCS, VMTK).
We will describe certain intermediate steps like image segmentation and boundary condition extraction as well as extension of the models to non-newtonian behavior of the blood and possible vessel wall interactions. We will briefly discuss the numerical methods in context of high performance computing.