How does a fluid behave inside of a spherical cavity?

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Discussion Overview

The discussion revolves around the behavior of a fluid, specifically water, entering a spherical cavity from one side. Participants explore various aspects of fluid dynamics within the cavity, including potential turbulence, changes in speed, and wave behavior. The scenario is set within a closed cavity that allows fluid to enter but not exit.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions whether the flow will create turbulence, whether the speed of the fluid will increase, and if waves entering the cavity will reflect and potentially increase in amplitude.
  • Another participant raises the issue of what is inside the cavity, suggesting that the presence of air would lead to compression as the cavity fills, indicating a need for more details to analyze the scenario.
  • A participant clarifies that the cavity could be situated on the surface of the sea, with the lower part filled with water and the upper part filled with air.
  • One participant challenges the relevance of the sea context and requests a more complete problem description, questioning assumptions such as the nature of the fluid (ideal vs. real) and the conditions of the influx.

Areas of Agreement / Disagreement

Participants do not reach a consensus, as there are multiple competing views regarding the scenario's setup and the assumptions that need to be clarified for a thorough analysis.

Contextual Notes

Participants highlight limitations related to missing assumptions, such as the nature of the fluid, the pressure conditions, and the specifics of the influx, which are necessary for a complete understanding of the problem.

Domenico94
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Suppose you have a spherical cavity, with a flow of a fluid ( in particular water), entering it from one side. What will happen to this flow? Will it create turbulences? Will speed increase? Will eventual waves entering the cavity be reflected, so creating waves with bigger amplitude?
Suppose the cavity is closed and doesn't allow water to exit .Only to enter.
 
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What's inside the cavity ? If there's air it will be compressed while th cavern fills up. You'll have to tell us some more details for this scenario to work it out ...
 
Suppose it is on the surface of the sea, for example. So, the lower part is filled with water. The upper part is filled with air.
 
Why do you bring in the sea ? Try to paint a complete picture and set up a complete problem description. We're not telepathic.
Ideal fluid ? 'Infinite pressure' allowed ? What causes the influx ?
 
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