Title :
Experimental research on the flushing performance of self-excited inspiratory pulsed liquid-gas jet nozzle
Author :
Gao, C.C. ; Liu, Y.L. ; Liang, X.L. ; Ren, Z.Y.
Author_Institution :
Inst. of Electr. Power, North China Univ. of Water Resources & Electr. Power, Zhengzhou, China
Abstract :
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°.
Keywords :
confined flow; flow simulation; jets; nozzles; sediments; sprays; suspensions; two-phase flow; acting mechanisms; channel erosion; dredging volume; field experiments; indoor experiments; jet flushing performance; optimum spray angle; sediment suspension height; self-developed self-excited inspiratory pulsed jet nozzle-deep water simulation test system; self-developed self-excited nonaspirating pulsed jet nozzle-deep water simulation test system; self-excited inspiratory pulsed liquid-gas jet nozzle; shipborne flushing system; starting sediment concentration; transport concentration; Deepwater Sediment Treatment; Field Experiment; Self-Excited Inspiratory; Suspension Height; Transport Concentration;
Conference_Titel :
Fluid Machinery and Fluid Engineering, 2014 ISFMFE - 6th International Symposium on
Print_ISBN :
978-1-84919-907-0
DOI :
10.1049/cp.2014.1212
