Fluxion Form Comparison between Newton Fluid and Bingham Fluid based on Three-Dimensional Numerical Simulation With Examples of Blood in Aorta and Water

The rheological properties of blood is one of the most important parameter to make an influence on human health. And the numerical simulation is a popular methodology to conduct research towards the fluxion form of blood. In this dissertation, this paper uses Ansys Aim to computationally analyze the vessels based on the theory of Computational Fluid Dynamics (CFD for short). Two kinds of fluid, namely the Newton fluid, water, and the non-Newton fluid, blood, are taken into consideration. And the model of the blood’s non-Newton fluid is set as the Bingham model. Two fluids’ distributions of velocity and absolute stress are given, and the comparison of their fluxion form is done. The simulated results reveal that the biggest velocity in Bingham model is 18.07% bigger than that in Newton model, and the max difference of stress in Bingham model is 139% bigger than that in the water model. The results stated above pave the way for the subsequent research.