Numerical study of the hydrodynamics of the T-graft in the model problem of optimizing the angle of low-flow vascular anastomosis

The hydrodynamics of a T-graft is investigated as part of the problem of determining the optimal angle of vascular anastomosis during neurosurgery. Four possible angles corresponding to the most commonly used real configurations are considered: $\pi/6$, $\pi/4$, $\pi/3$, and $\pi/2$. The problem is solved numerically using the ANSYS code. The condition of minimum integral of the viscous dissipation energy is used as an optimality criterion. It is shown that the anastomosis angle $\pi/3$ is optimal and the angle $\pi/4$ is the least favorable.