Poiseuille's Law + What is Laminar and Turbulent Flow? | MCAT
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- Опубліковано 5 лип 2024
- Today we cover Poiseuille's law and its associated equation, specifically focusing on the different variables in the equation and how each relate to each other-from flow (Q), radius (r), pressure gradient (deltaP), eta (viscosity), and length (L). One main takeaway: radius and pressure gradient are inversely related (if one goes up, the other must come down) at a constant flow rate (Q). We also cover ideal fluids, viscosity, and how the vasculature of the body-artieres, arterioles, capillaries, venules, and veins-can be analyzed with this equation.
Comprehensive Amino Acid Playlist: bit.ly/3sMGBUG
Check out Aratasaki, the beat maker behind my intro and outro: bit.ly/2Pma5v0
Time Stamps:
Intro: (0:00)
Poiseuille's Law Equation: (0:09)
Conditions for Poiseuille's Law: (4:12)
AAMC-Derived Practice Problem: (6:39)
Outro: (9:25)
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Poiseuille's Law + What is Laminar and Turbulent Flow? | MCAT
Poiseuille's Law + What is Laminar and Turbulent Flow? | MCAT
Poiseuille's Law + What is Laminar and Turbulent Flow? | MCAT
Your channel is so highly underrated!! Thank you for posting such quality content
Thank you so much! I really appreciate it!
While not everything on the MCAT will be clinically relevant, Poiseuille's law will show up again and again-especially in your Cardiology block in medical school! This is a great one for your long-term tool box.
Your videos are amazing, I can't believe you aren't more famous yet! UA-cam algorithm is actually doing a disservice to premed students if it's not recommending you enough, since you are SO helpful. Please know I am very grateful for your channel.
Wow, thank you! Hitting the like button and sharing with others is the #1 way to help the channel out!
I will definitely do that, you are a God-send!
thanks for the straightforward videos!
You're very welcome! Feel free to leave any questions, related or unrelated to the video!
First, thank you for all of these videos you've made! Quick question: you mentioned when solving your example problem that pressure must drop in order to compensate for an increase in radius, but isn't the opposite true? If radius increases -> area increases -> therefore velocity must drop in order to maintain constant flow (according to the continuity equation). Also, since velocity drops -> pressure must also rise in order to make sure that we follow conservation of energy (Venturi effect - also explained through Bernoulli's Equation -> KE drops, therefore, Pressure rises (height won't spontaneously change)). Maybe this isn't such a quick question actually.
Gud
Thanks!
In the question at the end of this video, what made us know to use Poiseuille’s Law instead of Q=Av
Good question! One hint is that you are maintaining the pressure gradient, deltaP, which is part of Poiseuille's law, not the continuity equation, Q = AV. If they start talking about maintaining the linear velocity (v), then that's a sign to use the continuity equation, Q = AV.