@Article{fdmp.2020.09676,
AUTHOR = {Chang Su, Qiangqiang Zheng, Wukun Zhao},
TITLE = {A Combined Experimental and Numerical Study of Shotcrete Jets and Related Wet Spray Nozzles},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {16},
YEAR = {2020},
NUMBER = {5},
PAGES = {947--960},
URL = {http://www.techscience.com/fdmp/v16n5/40297},
ISSN = {1555-2578},
ABSTRACT = {In this research, the dynamics of wet spray nozzles with different geometries, used to accelerate shotcrete, are investigated on the basis of a suitable
three-dimensional mathematical model and related numerical method. Simulations have been conducted in the frame of the SIMPLEC algorithm. The k-ε
turbulence model has been used to account for turbulent effects. The study shows
that when the angle of the convergent section is less than 3°, it has a scarce effect
on the dynamics of the jet of shotcrete; with the increase of the convergence
angle, the shotcrete jet velocity decreases and the nozzle wear increases; when this
angle is greater than 6°, the concrete outlet jet velocity is very small and the nozzle can easily be blocked. Experimental results are in good agreement with the
outcomes of the numerical simulations, which indicates that the used approach
is reliable.},
DOI = {10.32604/fdmp.2020.09676}
}