Water Flow Questions - Solve with Warm Welcome!

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  • Thread starter Thread starter Arkham_Angel
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Discussion Overview

The discussion revolves around fluid dynamics, specifically the flow rate of water through a drain and the work required to pump it back into a container. Participants explore the scenario of water flow from a container with specific dimensions and properties, as well as the theoretical implications of the flow rate changing as the water level decreases.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • Arkham Angel presents a scenario involving water flow through a drain and asks for the flow rate in centimeters per second, questioning if this rate changes as the water is emptied.
  • Arkham Angel inquires about the work required to pump the water back into the original container, providing specific dimensions and conditions for the setup.
  • Some participants suggest looking for formulas or resources to understand the principles involved, with one participant referencing Bernoulli's principle as a potential source of information.
  • Another participant expresses confusion about the material related to Bernoulli's principle, indicating a desire to learn and understand the concepts better.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express varying levels of understanding and seek different resources without resolving the specific questions posed by Arkham Angel.

Contextual Notes

Participants mention the need for formulas and resources, indicating that there may be gaps in understanding the underlying principles of fluid dynamics. The discussion reflects a range of familiarity with the topic, from basic inquiries to more complex theoretical considerations.

Arkham_Angel
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Thanks everyone for the warm welcome! Having said that, please forgive me if I'm being ignorant or unintentionally lazy.

I was also unsure where to put this question. Again, my apologies if it's in the wrong area. Ok! On to my questions. And by all means point me to some reading material instead of answering if you want to! I'm not above educating myself! :wink:

Scenario (I will try to provide as much information as I can think of):

Environment:
Temperature: 5 degrees Celsius
Elevation: 1 meter AMSL
Atmospheric Pressure: 29.9
Humidity: 50%

Container properties:
1 cubic meter @ 10 cm thickness
Temperature: 5 degrees Celsius
Water Drain: One 2.5 cm opening placed in the center of one of the cube walls (facing 'down').
Air Drain: One 2.5 cm opening placed directly opposite of the water drain (facing 'up')

Water properties:
Quantity: 1000 liters
Temperature: 5 degrees Celsius

The Question(s)
At what rate in centimeters per second will the water flow through the drain opening? Will the flow rate changes as water is emptied from the container? At what rate will the change be?

How much work would be required to pump the water back into the cube assuming the water emptied into another container shaped like the one mentioned above? The cube in which the water empties into is .5 meters to the right and .5 meters below the container mentioned above. Assume that a hose 2.5 cm in diameter is attached to the water drain which has a 2.5 cm 'nozzle' on it.

I hope I provided enough information and thanks for pointing me in the right direction!

Thanks,

-Arkham Angel-
 
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Err.. are these types of questions too much, too elementary or? Anyone point me in the right direction at least?

Thanks,

-Arkham Angel-
 
Noone said:
and if you know how i can make my own posts could you reply please -.- i really want to start a talk about Absolute Zero and the conflict it has with gravity at 0.000,000,000,001 kelven

Yes, go to the forum you want to post in. Look for a button called New Thread. Click that button and you're set.
 
If I could only get the formula or a site that could help explain it would be great. No need to do it for me. Teach me to fish. :-)
 
Any formula or site provided would be a great help!

Thanks,

-Arkham Angel-
 
http://en.wikipedia.org/wiki/Bernoulli%27s_principle" should give you the equation you need. Sorry for the useless noise posted before.
 
Last edited by a moderator:
:bugeye:

I probably sound like a sod, but that is a lot to take in! I see there are a lot of convenient links to explain things in detail though. Wiki is nice.

Thanks for the link. I don't understand some of the material presented in Bernoulli's principle; rather, I don't understand why (yet) :biggrin:.

So the voyage begins! I'll post what I discover when I figure it all out.
 

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