Questions tagged [hydrostatics]
20 questions
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How to make a weather buoy more stable?
I'm designing a weather buoy as a school project. I have read that the metacentric height is a good measurement for buoy stability and is relatively easy to calculate.
This page
says the metacentric height $MG$ is given by the…
5TableLegs
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Hydrostatic forces
Hello I had a quick question regarding this homework problem. The tank in the figure is 120 cm long into the paper. Determine the horizontal and vertical hydrostatic forces on the quarter-circle panel AB. The fluid is water at 20 C. Neglect…
jjrrrmkaas
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Hydrostatic transmission to directly translate movement
I have been thinking about small hydrostatic transmission to directly translate movement of stepper motor (NEMA 17-23 size, geared with 3:1 or 5:1 ratio).
My design currently involves 2 identical radial piston motors/pumps with 3 cylinders all…
janherich
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3
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How is high static water pressure avoided in municipal water systems?
Most cities get their water supply from local sources (springs, rivers, lakes) so the pressure in the system is never more than what is produced by the pumps.
But some cities get their water from elsewhere, typically from a much higher…
Ray Butterworth
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Computation of the moment of restoring forces for a floating vessel
Some slides associated to the book Handbook of Marine Craft Hydrodynamics and Motion Control (2021 edition) are provided by the author of the book here.
At page 12 of the slides for Chapter 4, the moment due to the restoration forces (gravity,…
Lucen
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Submerged fraction buoancy force
How can I calculate the height of the submerged part of a partly filled bucket?
(The liquid both inside and outside is freshwater).
The bucket is trapezoidal such that the volume of the submerged can be described as:
<$V_{bucket} =…
KSH
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Does stress have to be isotropic in fluid under static equilibrium?
Does the Cauchy stress tensor under static equilibrium in a fluid HAVE to be isotropic? If so why? I would like to be pointed to rigorous mathematical resources that show this. What physical constitutive assumptions leads to this?
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Could a hybrid system of mechanical levers and hydrostatic/hydraulic cylinders be able to lift 200+ kg with the force of an arm?
I don't know much about levers and hydrostatic/hydraulics myself, so I hope I don't make too many misconceptions.
The idea:
Hypothetically, if you had a 40km+ long indestructible lever on a indestructible fulcrum, you could lift the Eiffel Tower…
Fulano
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How to Calculate Pressure at a Elevated Tank's Tap
If I had two tanks of equal diameter, and one was was shorter but elevated, but the other was taller but sitting on the ground, which tap (with both taps connected to the bottom of the two tanks) would produce water with higher pressure? In this…
JohnMpofu
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What is the pressure of air trapped in glass of water turned upside down?
Consider filling a glass partially with water, covering it with a solid non-porous plate and then turning it upside down. The plate is not hinged to the glass. There is always some air trapped in the glass. Assume h << H.
Is $P_1 = P_{atm}$? If…
Brownian_Motion
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How thick must a concrete or block wall be to withstand hydrostatic pressures up to three meters' height?
I'm planning a basement 3.6m depth, ~0.5m of which extended above ground surface level, in a deep clay/alluvial terrain (bedrock inaccessible). Torrential rainfall during rainy season saturates the region, causing considerable flooding in low-lying…
Polyhat
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How do I draw moments on hinged gates?
Hello I had a quick question regarding moments on hinged gates on submerged curves. Is there a general rule that we follow when we draw moments on hinges, do we draw the hinges in the direction the gate would open if enough force acts on it? Do we…
jjrrrmkaas
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calculation for hydropower project
I'm studying a hydro-power project in high rise building.
given a 100 story building(3 meter per floor) with 2.5 cubic meter of water per floor DAILY with 1 or more tanks within the floors and turbine at the ground. goal is to have the highest…
yon1000
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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 in my experiment. Below is a rough schematic of…
WnGatRC456
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Archimedes Principle Question
A Spherical buoy has a diameter of 2m and weighs 3kN. It is designed to be used in a variety or circumstances by it being floated in water and anchored to the floor with a chain.
Draw the free body diagram and determine the following given thta the…
Pete Clarke
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