Are Our Understandings of Cyclone Separators Misguided?

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SUMMARY

The discussion centers on the misconceptions surrounding the operation of cyclone separators, particularly those utilizing water. Participants assert that the traditional understanding of particle behavior—where particles are believed to be thrown outward and slowed by friction—is fundamentally incorrect. Observations from homemade separators reveal that particles actually move into a central column and descend gradually. The conversation also touches on the application of cyclone principles in bagless vacuum cleaners and water/oil separators.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with cyclone separator design and operation
  • Knowledge of particle behavior in fluids
  • Experience with experimental observation techniques
NEXT STEPS
  • Research the physics of cyclone separators in detail
  • Explore the design and functionality of bagless vacuum cleaners
  • Study the operational principles of water/oil separators
  • Conduct experiments with homemade cyclone separators to observe particle behavior
USEFUL FOR

Engineers, physicists, and anyone involved in fluid mechanics or the design of separation technologies will benefit from this discussion.

styart
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Why is science explaining how cyclone separators work, is so wrong, at least those that work with water, the notion that particles are thrown to the outside and slow by friction until they fall is just wrong.
I have built several homemade separators from transparent plastic and have observed them in action, the particles go into a narrow column in the center of the separator and gradually fall.
If you don't believe me try this experiment, fill a tall glass with water, stir vigorously and drop in particles like sugar or similar, and watch what happens.
 
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I believe some bagless vacuum cleaners use a cyclone principle. Do they fit the description you decry?
 
Water/oil separators are common appliances, look for their principles of operation, usually the first section of the operators manual. My ships had two centrifugal and one gravity separator.
 

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