A lattice Boltzmann method for non-Newtonian blood flow in coiled intracranial aneurysms
CoRR(2024)
摘要
Intracranial aneurysms are the leading cause of stroke. One of the
established treatment approaches is the embolization induced by coil insertion.
However, the prediction of treatment and subsequent changed flow
characteristics in the aneurysm, is still an open problem. In this work, we
present an approach based on patient specific geometry and parameters including
a coil representation as inhomogeneous porous medium. The model consists of the
volume-averaged Navier-Stokes equations including the non-Newtonian blood
rheology. We solve these equations using a problem-adapted lattice Boltzmann
method and present a comparison between fully-resolved and volume-averaged
simulations. The results indicate the validity of the model. Overall, this
workflow allows for patient specific assessment of the flow due to potential
treatment.
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