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Results tagged with flow
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user 250386
The motion of fluids (gases, liquids and granular material).
4
votes
1
answer
365
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What causes blood flow to become turbulent after a constriction?
If a blood vessel is narrowed from the middle, the blood flow turns turbulent (see image below).
Why does this happen? … Does it have to do with Reynolds number becoming high because velocity has increased since $Re=\frac{\rho v D}{\eta}$ the higher Re is, the more likely the flow becomes turbulent, or is there another explanation …
- 75
3
votes
3
answers
1k
views
What does $ \mu \nabla^{2} \vec V$ mean in the Navier-Stokes equations?
$$\rho\frac{D \vec V}{Dt}=-\nabla p+ \mu \nabla^{2} \vec V+\rho g$$
In the Navier-Stokes equations there's this term $ \mu \nabla^{2} \vec V $.
I don't really understand what this means. What is the p …
- 75