So... how does this apply to, say, a butterfly valve in a pipe. The volume flow on the upstream side of the valve is faster than the volume flow on the downstream side. This seems to defy the continuity equation unless I am misunderstanding something. Any ideas?
Rational, Logical, Easy to Understand. You've got an interesting way while explaining something, Sir😁😁. Hmm, btw i got question for all aspect in science esp. physics. when we say 2x3, we imagine that we have "3" two times or twice. but could you explain how do we imagine "A.Δx" like in the video ?, because it surely doesn't mean "we have Δx as A times".
And sorry, Sir. I also want to ask you that, can we use the equation denoting the same volume instead of mass? because we know the density in the ideal fluid doesn't change so it should be the same when we apply volume in it.
Not sure Rho would cancel as the density of the traffic changes significantly... also cars will only go faster if the flow rate is constant through out, and for traffic it most definitely isn’t.
Kevin, Good points. Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A
I think the wheels came off the traffic analogy .Imagine there are 4 lanes of cars moving at 60 mph then by this formula the cars should be shooting out the single lane at 240 mph! How often do you see that ? Cars slow down at the traffic jam not speed up like a fluid does.That is so wrong on every level.An otherwise good course though
We are considering a fixed amount of time for the fluid to flow. Thus the clock runs some amount, the water moves, and the mass of the water on the left needs to equal the mass of water on the right (otherwise water would leak out of the pipe). Cheers, Dr. A
By far one of the best physics professor at SDSU, hands down
Thank you Professor, awesome explanation! You are a life saver
AMAZING PHYSICS LECTURES! I LEARN A LOT!
you draw the symbols like a magician, thanks
So... how does this apply to, say, a butterfly valve in a pipe. The volume flow on the upstream side of the valve is faster than the volume flow on the downstream side. This seems to defy the continuity equation unless I am misunderstanding something. Any ideas?
You look like ABC's Sherlock.. I couldn't resist saying here haha. Have thought of it a few times before
that's right! I didn't notice till see your comment
thanks a lot
Rational, Logical, Easy to Understand. You've got an interesting way while explaining something, Sir😁😁. Hmm, btw i got question for all aspect in science esp. physics. when we say 2x3, we imagine that we have "3" two times or twice. but could you explain how do we imagine "A.Δx" like in the video ?, because it surely doesn't mean "we have Δx as A times".
And sorry, Sir. I also want to ask you that, can we use the equation denoting the same volume instead of mass? because we know the density in the ideal fluid doesn't change so it should be the same when we apply volume in it.
Not sure Rho would cancel as the density of the traffic changes significantly... also cars will only go faster if the flow rate is constant through out, and for traffic it most definitely isn’t.
Kevin,
Good points. Thanks for the comment, and keep up with the physics!
You might also like my new website: www.universityphysics.education
Cheers,
Dr. A
I think the wheels came off the traffic analogy .Imagine there are 4 lanes of cars moving at 60 mph then by this formula the cars should be shooting out the single lane at 240 mph! How often do you see that ? Cars slow down at the traffic jam not speed up like a fluid does.That is so wrong on every level.An otherwise good course though
It’s a bottle neck traffic jam jim, cars would be moving at less than 20mph. Where do you see people driving at 60mph in traffic. Think about it
Super sir
nyc sir
Nice explanation sir. I have question. When we are blocking the passage. The velocity increases, can you tell me about the pressure at this place?
Yes, but you need Bernoulli's help: ua-cam.com/video/MxIP73frBZk/v-deo.html
Cheers,
Dr. A
hello in reality can water in a pipe reach 1000ms???
Why is the change in time the same?
We just set it the same for the proof.
Cheers,
Dr. A
Can I ask you physics numerical questions?
Why time is same
We are considering a fixed amount of time for the fluid to flow. Thus the clock runs some amount, the water moves, and the mass of the water on the left needs to equal the mass of water on the right (otherwise water would leak out of the pipe).
Cheers,
Dr. A