Are Our Understandings of Cyclone Separators Misguided?

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The discussion critiques the common understanding of cyclone separators, particularly those using water, arguing that the traditional explanation of particles being thrown outward and slowed by friction is inaccurate. Observations from homemade transparent separators reveal that particles actually move into a central column and fall gradually. An experiment with stirring water and adding particles like sugar illustrates this behavior. Additionally, the conversation touches on the application of cyclone principles in bagless vacuum cleaners and various types of separators used in ships. The insights challenge established notions and encourage further exploration of cyclone separator functionality.
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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