Abstract
Aortic coarctation is a congenital condition in which the aorta is narrowed. The pressure drop through the aorta depends on the extension of this narrowing. Therefore, severe coarctations have important side-effects on the hemodynamic conditions of the circulatory system. The Computational Fluid Dynamics (CFD) simulation of the hemodynamics in a patient specific aortic coarctation can help to predict the pressure drop produced by the aorta narrowing. Nevertheless, an accurate prediction of the pressure drop, by means of CFD tools, depends strongly on the boundary conditions (BCs). In this study we present the results of ten simulations performed on a patient specific aortic coarctation vasculature proposed in the second MICCAI-STACOM CFD Challenge. The model includes ascending aorta, arch, descending aorta, and upper branch vessels. Specifically, we consider; two different physiological states a) rest and b) stress condition. For both cases the flow rate waveforms are provided at the ascending aorta and descending aorta. The ten simulations are performed using five different set of boundary conditions. The results are reported and indications on the more accurate boundary conditions are discussed.
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References
Hager, A.: Hypertension in aortic coarctation. Minerva Cardioangiologica 57(6), 733–742 (2009)
Govindaraju, K., Badruddin, I.A., Viswanathan, G.N., Ramesh, S.V., Badarudin, A.: Evaluation of functional severity of coronary artery disease and fluid dynamics’ influence on hemodynamic parameters: A review. Physica Medica 29(3), 225–232 (2013)
Alberto Figueroa, N.W., Mansi, T., Sharma, P.: 2nd CFD Challenge Predicting Patient-Specific Hemodynamics at Rest and Stress through an Aortic Coarctation (2013), http://www.vascularmodel.org/miccai2013/
ANSYS FLUENT 13 (2013), http://www.ansys.com/
ANSYS ICEM CFD (2013), http://www.ansys.com/
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Cito, S., Pallarés, J., Vernet, A. (2014). Sensitivity Analysis of the Boundary Conditions in Simulations of the Flow in an Aortic Coarctation under Rest and Stress Conditions. In: Camara, O., Mansi, T., Pop, M., Rhode, K., Sermesant, M., Young, A. (eds) Statistical Atlases and Computational Models of the Heart. Imaging and Modelling Challenges. STACOM 2013. Lecture Notes in Computer Science, vol 8330. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54268-8_9
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DOI: https://doi.org/10.1007/978-3-642-54268-8_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-54267-1
Online ISBN: 978-3-642-54268-8
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