How is pressure and flow rate related?
The flow rate is proportional to the square root of the pressure gradient (F ∝ √P).
Why does pressure decrease with flow rate?
Bernoulli’s equation states mathematically that if a fluid is flowing through a tube and the tube diameter decreases, then the velocity of the fluid increases, the pressure decreases, and the mass flow (and therefore volumetric flow) remains constant so long as the air density is constant.
Does pressure affect flow rate in pipe?
You imagine that there is a valve at the end of the pipe. When closed, there is pressure P in the tube. The flow rate in the tube is zero. Therefore: The flow rate in the pipe is not determined by the pressure in the pipe, but by the pressure drop gradient along the pipe.
How does resistance affect the flow rate of a split?
The pressure is the same at each resistance inlet (upstream in the split). If one leg of the split has more resistance than the other there will be more pressure drop relative to the other resistance and the flow rate will be less.$\\endgroup$ – docscience Oct 12 ’14 at 0:17
What is the pressure at each resistance inlet of a split?
The pressure is the same at each resistance inlet (upstream in the split). If one leg of the split has more resistance than the other there will be more pressure drop relative to the other resistance and the flow rate will be less.
What does it mean when pressure PA has to drop?
That means the velocity in line A has suddenly increased (since RA did not change). According to Bernoulli then, the pressure PA has to drop. Is this correct?
What happens to pressure Pa when RB doubles?
If RB doubles, then the resistance in line B will be more, diverting more flow into line A. That means the velocity in line A has suddenly increased (since RA did not change). According to Bernoulli then, the pressure PA has to drop. Is this correct?