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Fluid-elastic interactions occur in many problems in human physiology. Blood flow in arteries is one such example. Aortic aneurysm is a bulge in the aorta , the main artery that carries blood from the heart to the chest and torso. The bulge is caused by weakening of the aorta wall. Pulsatile blood flow coupled with the elastodynamics of the aneurysm wall could lead to the rupture of the aneurysm wall.
Pressure distribution in the longitudinal plane during one cardiac cycle. Two constitutive relations for the blood flow were considered---Newtonian and Carreau-Yasuda.
The figure on the left shows vorticity contours of the Carreau-Yasuda blood flow model during one cardiac cycle. The figures on the right of it show the λ2 = −75 s−1 iso-surfaces for blood flow models.
G R Krishna Chand Avatar. 2021. Numerical simulations of hemodynamics and wall mechanics of idealized fusiform abdominal aortic aneurysms. MTech thesis. Department of Aerospace Engineering, Indian Institute of Science.
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