Numerical Analysis Of Blood Flow In
Human Abdominal Aorta
Author(s)
M. Podyma, I. Zbicinski, J. Walecki, M. L. Nowicki,
P. Andziak, P. Makowski & L. Stefanczyk
Abstract
A CFD model of flow hemodynamics in abdominal aortic aneurysm to estimate
the effect of four different flow conditions on velocity and pressure profiles was
developed and verified. The reconstruction of blood flow domain geometry was
performed on the basis of CT examination. Our own software was used for CT
image segmentation and real blood flow domain geometry reconstruction. Data
necessary for determination of initial and boundary conditions as well as for
verification of developed CFD model were collected from USG-Doppler
examinations at 4 characteristic areas of the abdominal aorta. The result of these
calculations proved that, irrespective of the applied boundary conditions and
flow type, velocity profiles in all of the analysed models were similar. The
comparison of theoretical and experimental results showed a significant
difference in the absolute values of both velocities and heart-work period length.
The reasons for the discrepancies were analyzed indicating both numerical
factors and the character and accuracy of the USG examination.
Keywords: numerical simulation, verification of CFD model, hemodynamics,
segmentation, CT, USG-Doppler.
Keywords
numerical simulation, verification of CFD model, hemodynamics,
segmentation, CT, USG-Doppler.
Related Book
Other papers in this volume
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