Fluid dynamic pump

Details Fluid dynamic pump Fluid dynamic pump

1986-04-30

1989-06-06

Casaregola, Louis J.

Power plants

Reaction motor

Including motive fluid treating means

417167, 60262, 181220, F02K 304

Patent

active

048359610

ABSTRACT:
A fluid dynamic pump, such as an ejector, has a common wall which separates a primary high energy fluid flow passage and a secondary low-energy fluid flow passage. The common wall includes a plurality of adjoining lobes extending in the direction of flow to the outlets of the passages at the downstream end of the common wall. A lobe on one side of the wall forms a corresponding trough on the other side. The common wall therefore has a wave-like shape at its downstream end. Primary and secondary fluid flow from the trough outlets on their respective sides of the common wall and are mixed together rapidly in a mixing region downstream of the outlets. A diffuser is located at the downstream end of the mixing region and enhances the pumping ability of the ejector. Secondary fluid is thereby drawn or pumped into the mixing region as a result of this transfer of energy from the primary stream to the secondary stream. Viscous losses are low during the process.

REFERENCES:
patent: 3635308 (1972-01-01), Millman
patent: 3696617 (1972-10-01), Ellis
patent: 3861140 (1975-01-01), Krabacher
patent: 4117671 (1978-10-01), Neal et al.
patent: 4240252 (1980-12-01), Sargisson et al.
Fluid Flow; Saberskv, Rolf H.; Acosta, Allan J.; Hauptmann, Edward G., 1971, p. 160.

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