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Numerical simulation of blood flow in aneurysms – running

Aneurysm is a local pathological disorder in the vascular wall that leads to damage the vessel wall. As a result, dilatation occurs in the vascular wall. Based on the shape and location, we distinguish between sack-like and spindle-like (fusiform) enlargements. Our simulations mainly target the flow processes in brain aneurysms.

The first aim of our calculations is to examine the effect of the flow diverter (FD) stents as a treatment of the disease. To be able to investigate this, a large number of numerical cells must be prepared to properly discretize the flow domain after each struts of the stent (30 ~ 40 microns). Our task is to validate another software we have written in which we use another modeling process, where the FD stents are assumed to be a homogeneous porous material layer.

The second aim of our task is to analyze the contrast agent propagation and residence time, which plays a dual role in medical diagnostics. On the one hand it is the basis for angiographic medical imaging, on the other hand the effectiveness of the treatment can be verified directly after the intervention. In this task, we would examine this second case by using two modeling ideas. In the two-phase (blood and contrast material) calculations we first discretize the flow domain and the whole stent geometry in detail, according to the second idea, we will simulate the stents as a porous material.

Project owner:
Csippa Benjamin Dávid (Hidrodinamikai Rendszerek Tanszék)
Web address:
http://www.hds.bme.hu/
Members:
Hidrodinamikai Rendszerek Tanszék (GPK-VIZGEP)