Another is the flow within cyclone separators; the swirling flow there occurs in an annular region between two tubes.
The swirling flow occurs in an annular region between two tubes. Another is the flow within cyclone separators.
Another is the flow within cyclone separators. The swirling flow occurs in an annular region between two tubes.
Another is the flow within cyclone separators. The swirling flow occurs in an annular region between two tubes.