Open AccessStudy on fluidization process in jet flow dredging device and the effects of device structure to sand collecting performance
Author(s) -
Zhang Yue,
Song Jun
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012117
Subject(s) - suction , fluidization , jet (fluid) , dredging , materials science , flow (mathematics) , geotechnical engineering , mechanics , engineering , mechanical engineering , fluidized bed , geology , physics , waste management , oceanography
The device structure has important influence on the sand collecting performance of jet flow dredging device. In order to study the effects of device structure, this paper presents a research for fluidization process of compact packing sand in jet flow dredging device. The calculation method which considers the cohesive strength between particles is proposed. The effects of arrangement of jet pipe and diameter ratio between jet pipe and suction pipe on sand collecting performance are studied. By comparison, we found that the structure of jet pipe inside suction pipe has better sand collecting performance than it outside suction pipe. With the jet velocity increasing, the pipe diameter ratio corresponding to the maximum concentration of particle phase at outlet reduces.