What many overlook is what happens just below the inversion point, I have more tests to do but I believe a neutral pressure cell is created similar to that of the Eye of a Cyclone that facilitates the separation process, I feel there has to be a way to control the inversion point so it only occurs at the very base of the Cone.
This could be by using a VFD controlled Fan or
Having a parallel bank of smaller Cyclones where individual Cyclones can be enable or
Disabled or controlling an adjustable inlet and outlet aperture of the Cyclone.
Or drawing air lowering air pressure from the particle receptacle to lower the Cyclone if it inverts to high in the chamber.. this just came to me.
I am no professor or mathematician but Cyclonic Practical Separation has had me fascinated for some 2 years now.
It has frustrated me to no end how many company engineers have posted misleading erroneous papers and videos on how their Cyclonic Separators work.
I just feel most people who have published papers and videos have limited them selves to the foundation principles started from 1985.
I feel there is a lot more to be done with cascading and introduction of other technologies to compact the footprint and improve efficiency.
I am currently working on some design for a vertical panel of miniature cyclones to eliminate or dramatically increase the time between maintenance of exhaust cartridge filters.
I hope to also have a small self cleaning dust extractor that can sit behind the Z Axis or on the side of the Y Axis of a router with minimal noise and separation efficiency of HEPA filters down to .3 - .5µm
This is why I like to engage people in discussion to challenge me and me them, helps me learn.
For now ill take a look at that Cyclone Thesis.
Maybe Admin could add a Dust extractor separator area to the forum