Experimental research on the flushing performance of self-excited inspiratory pulsed liquid-gas jet nozzle

In order to study the performance of jet flushing, many indoor and field experiments were conducted by using a self-developed self-excited inspiratory (or non-aspirating) pulsed jet nozzle-deep water simulation test system and shipborne flushing system. The results indicated that self-excited inspir...

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Bibliographic Details
Main Authors: Gao, C.C, Liu, Y.L, Liang, X.L, Ren, Z.Y
Format: Conference Proceeding
Language:English
Subjects:
Erosion and sedimentation (hydrological)
Flows in ducts, channels, and conduits
Fluid mechanics and aerodynamics (mechanical engineering)
General fluid dynamics theory, simulation and other computational methods
Jets in fluid dynamics
Multiphase flows
Nozzles
Testing
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Summary:In order to study the performance of jet flushing, many indoor and field experiments were conducted by using a self-developed self-excited inspiratory (or non-aspirating) pulsed jet nozzle-deep water simulation test system and shipborne flushing system. The results indicated that self-excited inspiratory pulsed liquid-gas jet nozzle is better than self-excited pulsed jet nozzle in starting sediment concentration, sediment suspension height, transport concentration and dredging volume on the same conditions. Since the difference of acting mechanisms of liquid-gas jet and liquid jet on the channel erosion, Spray angle on channel erosion was significantly, optimum spray angle is 60°-75°.
DOI:10.1049/cp.2014.1212