Quiz: Let the Blood Flow!
The blood flow in an artery depends strongly on the geometry of the vessel – but can you predict how? In this quiz, I show you three vessel geometries for which we calculated the blood flow. Guess at which positions the flow is fastest, and post your answers in the comments section!
This is a rather simple bifurcation example. The blood streams in at 1 m/s, then the vessel splits up. Take into account that the blood flow is faster when the vessel is narrower! Here, we consider the maximum velocity at each of the cuts.
Here, the situation is more complicated. Generally, the blood flow is fastest near the centre of a vessel, and zero at the boundary. This does not help here, since all positions are at the same distance from the boundary. You have to take into account from where the blood flow comes!
And finally, the most difficult case. To give you a hint, the blood flow is of very similar magnitude at three of the positions, and the maximum is obtained at one of these three! Again, we compare the maximum velocity at each of these cuts.
Post your answers to the comments section!