Can We Design a Tube to Resist Fluid Flow?

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Discussion Overview

The discussion revolves around the feasibility of designing a tube that can completely resist fluid flow, exploring concepts such as viscosity and surface tension. Participants consider various devices and mechanisms that might achieve this goal, including the Tesla valve and ferrofluidic seals.

Discussion Character

  • Exploratory, Debate/contested, Technical explanation

Main Points Raised

  • One participant questions whether a tube can be designed to completely resist fluid flow, suggesting viscosity or surface tension as potential approaches.
  • Another participant mentions the ferrofluidic seal as a device that might come close to achieving this resistance.
  • A different participant introduces the Tesla valve, noting its lack of moving parts and prompting a discussion about the definition of a tube.
  • There is a query regarding the inlet pressure required for a system to resist fluid flow, highlighting the operational conditions necessary for such designs.
  • A later reply points out that while the Tesla valve has high resistance to backflow, it does not completely stop it, indicating limitations in its effectiveness.

Areas of Agreement / Disagreement

Participants express differing views on the possibility of completely resisting fluid flow, with no consensus reached on the effectiveness of proposed devices or approaches.

Contextual Notes

The discussion includes assumptions about the definitions of devices like tubes and the conditions under which they operate, which remain unresolved.

ramadhankd
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Hello everyone, I want to ask something. Can we design a tube that can completely resist the flow of a fluid? Maybe using either viscosity or surface tension approach? Thanks
 
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ramadhankd said:
Hello everyone, I want to ask something. Can we design a tube that can completely resist the flow of a fluid? Maybe using either viscosity or surface tension approach? Thanks
Closest device i can imagine is the ferrofluidic seal.
 
How about the Tesla valve? It has no moving parts. Whether or not it is a tube is up to your definition of tube.
 
How much inlet pressure does it need to resist?

PS The Tesla valve has a very high backflow to forward flow resistance but does not fully stop backflow.
 

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