Instability in Pulsatile Flow


Please sign in to view the rest of this entry.

Instability in Pulsatile Flow
Instability in Pulsatile FlowIt is helpful here to point out some useful information concerning stability and instability under pulsatile flow conditions. As a rule, flow in large arteries in humans is highly pulsatile. By the time the flow reaches small-diameter arteries and arterioles the pulsatile elements drop out. By the time the flow reaches the capillaries, the flow becomes steady. Flow in large-diameter veins becomes pulsatile once again.The Reynolds number for flow in humans, even in large-diameter arteries, is generally much less than 2000 and is therefore typically laminar. However, the presence of branching and other fluid wall interactions can sometimes result in local flow instabilities.
Citation
Lee Waite, Ph.D., P.E.; Jerry Fine, Ph.D.: Applied Biofluid Mechanics, Second Edition. Instability in Pulsatile Flow, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export