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Questions tagged [hydrodynamics]

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Open-ended pipe under water, pressure vs. flow when pump starts up

A pipe with a pump and two open ends is placed under water. When the pump is initially turned on, will the pressure at P_out and P_in initially rise/fall, but then stabilize as a flow of water V_flux ...
BipedalJoe's user avatar
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"reversing pump" in closed water circuit, can water pumped reach further than wave length?

In a closed water circuit with a reversing pump. If the wavelength of how far water pressure wave (positive and negative) reaches during one pump/suction cycle is much shorter than the length of the ...
Johan's user avatar
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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 ...
Shiven Agarwal's user avatar
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Can saline water be used in a hydro storage system and would the ambient temperature or higher liquid viscosity affect performance?

In regards to this question: How to determine the efficacy and potential energy of hydro power energy storage?. I'm searching for a cheap liquid that I can use for a small scale pumped hydro storage. ...
Bob Ortiz's user avatar
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Any scientific research papers on electromagnetic active valves using variable viscosity electromagnetic fluids?

I know the title is quite a mouthful, but let me explain (also, I couldn't find anything on the subject, maybe because I'm using the wrong words). I saw some time ago a video about a variable ...
Fulano's user avatar
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Would it be possible to harness the energy flow from a continuous water system?

I’m working on a project to put Archimedes screw turbines into drains and sewerage water. However, as an experimental project I wanted to test out an idea to evaluating turbine degrees and flow rate ...
Suzie's user avatar
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Stochastic parametric stability of structures

I am investigating an engineering problem that relates to the dynamic stability of a beam-like structure under the action of a stochastic excitation (say, e.g., a marine structure acted by waves or a ...
J. Serra's user avatar
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How do water tunnel experiments compare to wind tunnel experiments?

I recently stumbled across the water tunnel videos by this guy: He states that for his "high flow" experiments the water speed is at 0.668 m/s. The car ...
fho's user avatar
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