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(a) Time-lapse images of the system in operation. (i) Liquid is added to the loading reservoir, (ii) compression of air in pressure chamber as a result of high rpm, (iii) relaxation of air and pumping of liquid towards the center, (iv) increase of rpm to maximum, (v) priming of the siphon as the liquid level rises above the crest of the siphon, and (vi) the empty system. (b) Flow reciprocation work cycle profile: angular frequency vs. time.
