The circulation is normally analyzed in a 2D cross-section of the aorta, manually placed. To avoid this problem, evaluate and validate a new methodology based on Finite Elements (FE) to calculate the circulation in three-dimensions, in in-silico models, and in the ascending aorta of a group of volunteers and patients. In in-silico experiment we obtain an RMSE of the circulation values less than 1.6e-6. We also found that significant differences exist between volunteers and patients with a p-value of 0.0283. Our method is straight forward to calculate, accurate and robust throughout different resolutions and noise levels.