This video shows the simulation of the blood flow in a single artery conducted with the STARFiSh simulation program. It additionally highlights wave propagation phenomena as forward and backward travelling pressure waves. And shows how forward and backward propagating waves can be visualised in 2d and 3d.
Short introduction to wave propagation in arterial systems:
In arterial circulation systems, the heart pumps blood in a periodic way which results in flow and pressure waves travelling down the arterial tree, from the heart to periphery. The flow and pressure waves can be reflected at various points, e.g. at bifurcations (branching of arteries) or at places where arteries narrow rapidly i.e. stenoses.
This reflected waves then travel back to the heart. The mechanism of reflection can be found in any physical setting with wave propagation, for example in the ocean.