The following videos show the results for two simulations deeming different constitutive models used for the blood.
MODELING BLOOD AS A NON-NEWTONIAN FLUID (CASSON MODEL)
The following films show results of a simulation of the carotid artery blood flow, for 120 beatings per minute, varying the viscosity of the blood, that was modeled as a non-Newtonian fluid by using a Casson model. In case 2, viscosity is about 4 times smaller that in case 1. For the visualization of the velocity field, several cross sectional cuts were made through the vessel, and a warping filter is applied as a function of the module of the velocity field. In the details, films 1 and 2 show the velocity field in these sections and films 3 and 4 show the distribution of the streamlines for each case.
Film 1: Velocity vectors for the case 1.
Film 2: Velocity vectors for the case 2.
Film 3: Streamlines for the case 1.
Film 4: Streamlines for the case 2.
MODELING BLOOD AS A NEWTONIAN
The case below shows the same results as those shown above for the blood flow at the carotid artery, in this case with a cardiac period of 75 beatings per minute. Besides the velocity profiles and streamlines, the films also show the deformation of the arterial wall.
Film 5: Velocity profiles and deformation of the arterial wall.
Film 6: Streamlines in the bifurcation region and deformation of the arterial wall.
