# Questions tagged [bernoulli]

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This question is about the following two energy balance equations (assuming no energy input/output): Bernoulli: $\frac{p}{\rho} +\frac {v^2}{2} + zg = const.$ Steady-flow: $u +\frac {p}{\rho} +\frac{... 2 votes 0 answers 61 views ### Help calculating discharge rate from a reservoir as the water level drops? I could do with some help calculating the discharge rate from a reservoir and factoring in how that flow will decrease as the head of water decreases. The information I have is: Maximum height of ... 1 vote 0 answers 63 views ### Efflux velocity for system with air and liquid I want to calculate the efflux velocity for this open vessel with area$A_1$with a small outlet with area$A_2$as a function of time. The atmospheric pressure is$p_0$. The vessel has height$h = h_{...
1 vote
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For a Venturi, I calculated total head theoretically and experimentally. I noticed that the last point along the Venturi has not got the same as the start point total head? Shouldn’t it be the same ...
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### Velocity value in a pipe junction when we're applying the energy equation

I'm trying to understand how to apply the energy equation at a junction of 3 pipes. For example, when we are considering points A and D, should we consider that velocity at point D just before the ...
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### What happens when electrolytic process rotameters are swapped for a much bigger one?

electrolytic process rotameter were swapped for much bigger rotameters. Inlet pipes are the still the same. What effect does the bigger rotameter have in the concentration of catholyte in the cell?
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### Why is the stagnation pressure equal to the atmospheric pressure in the test section of an open-circuit wind tunnel?

I understand Bernoulli's Principle at different sections of the wind tunnel (static and dynamic pressure), and that it is equal to the atmospheric pressure (hence open-circuit). However, I don't ...
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### Find pressure, given 2 velocities at open end of pipe and inside pipe, at different elevations

There is a tube travelling horizontally, 8m below the ground, with a diameter 15cm. It then turns upwards and at a height of 1.75m above the ground, it shoots water out with a velocity 32 m/s. Find ...
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### Increasing air velocity through F1 car diffuser

I am looking into F1 car aerodynamics for a course that I am taking. I understand that because of Bernoulli's law, when the velocity increases, the pressure decreases, which is good for F1 cars if we ...
93 views

### Quantifying the reaction force on fixed tubing connected to a peristaltic pump

I am not sure how I should consider the forces due to hydrostatic pressure when calculating the reaction force due to a fluid being pumped through fixed tubing with a peristaltic pump that I am using ...