Questions tagged [liquid]
For questions about the specific properties of materials in their liquid states, and their engineering applications, such as in hydraulics, heating/cooling systems, and chemical reactions.
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Calculate the max speed at which a submarine rises/dives + acceleration
I'm trying to figure out how I would calculate the rate at which a submarine (or any object) ascends or descends in seawater given a certain buoyancy or change in buoyancy. For example, if my ...
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Equal Flow to differently spaced water recepticles
I'm Designing a self watering planter, and I want to split the water from a main resevoir at the top to 5 smaller tanks below, but they are at differing elevations and distances from the resevoir. ...
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Calculate heart valve flow rates over time. What formulas are involed?
I'm trying to program a simulation of a human heart which I want to produce results close to the following:
(Source: https://en.wikipedia.org/wiki/Cardiac_cycle#/media/File:Wiggers_Diagram_2.svg)
For ...
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How to raise viscosity of water
I need to measure a machine for a liquid of which I know the viscosity (89 Kinetic Viscosity) but I don't have the liquid at hand. Is there a clever way of increasing viscosity of water to 89?
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How to prevent water droplets from staying on stainless steel / glass surfaces?
I'm designing a small tea strainer in the shape of a cylinder that goes into a glass bottle, which is also shaped like a cylinder. Currently, I'm still designing it in Fusion 360, but I'm facing one ...
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Materials that will block water but allow sound to travel through without being muffled
I am in a fraternity at my college. We would like to host a paint party but are worried about our speakers getting damaged. The paint used is water based, so very thin. The paint is made using ...
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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. ...
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Liquid splashes - who researches it, and why don't all urinal mats look the same?
I normally wear shorts in the summer, at which point I become very aware of the problem every man knows about - splashback of pee from urinals. No matter how you stand or aim, the inherent splashing ...
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Optimized water droplet formation
What is the best way to "shatter" a water drop falling purely under gravity if the objective is to break it into as many droplets and as fine (smallest diameter) as possible? Should the ...
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Peristaltic pump - theory vs reality, where is a problem?
I'm building a test system (experiment) for peristaltic pump to check if pump is able to pump according to specification. The pump data: 6,3ul liquid moved per stroke. 5 strokes per revolution. The ...
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Water dynamics in aluminum pipeline for dummies
This topic is totally alien to me, so I may be asking something very obvious.
I am designing a cooling system. In the bulk of aluminum, I drill 3mm holes and then I connect them one to another to ...
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Temperature of water decreasing during boil
I am trying to understand this phenomenon that I have noticed with my system (40L capacity boiler with a NTC thermistor located at the bottom).
When boiling 10 Litres, the temperature reading reaches ...
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How does shear/viscous stress change in liquids as applied shear force is changed?
As per Newton's law of viscosity, the dynamic viscosity of a Newtonian fluid is constant (doesn't change with applied shear stress).Consider the Couette flow used to explain viscosity .
Whenever we ...
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Calculating gas volume in a gas-liquid system/pressurized vessel
There is water in a tank and the tank is connected to a piece of piping that has a volume of 2.5L.
The headspace above the water is pressurised by using air, to a pressure of 3 bar (a).
What happens ...
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Valves and plumbing size
I'm building a liquid rocket engine and we're using kerosene and oxygen as our propellent. Now my question is what pipe size should we use? My flow rate for kerosene is 0.160 Liters per second and we ...
