Abstract
This paper treated the blood flow simulation for an aorta with the stenosis based on a clinical example. The physical model of the aorta was established by using the CT pictures. Based on the Reynolds averaged Navier-Stokes equations, three-dimensional turbulent flow were analyzed for the aorta. The numerical results indicated that: (1) the blood flow condition was greatly affected by the stenosis of an aorta. Both the steady and unsteady calculation had shown the same tendency as the clinical measurement; (2) with the existence of the stenosis, the velocity at the aorta greatly increased at the stenotic site. The large pressure-difference between upstream and downstream of the stenotic site, and wall shear stress larger than the critical value occurred; (3) The unsteady calculation depicted that the waves for the section-averaged velocity at the stenosis, the pressure-difference between the upstream and downstream of the stenosis, and the wall shear stress had different components, and their main pulses had different frequency. Those results provide very useful references for clinical treatments.
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© 2009 Tsinghua University Press, Beijing and Springer-Verlag GmbH Berlin Heidelberg
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Li, Y., Luo, X., Zhang, M., Zhang, Y., Liu, S., Xu, H. (2009). Simulating the Blood Flow for the Aorta with a Stenosis. In: Xu, J., Wu, Y., Zhang, Y., Zhang, J. (eds) Fluid Machinery and Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89749-1_31
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DOI: https://doi.org/10.1007/978-3-540-89749-1_31
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-89748-4
Online ISBN: 978-3-540-89749-1
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