TITLE:
Simulation and Experimental Study on Spray Characteristics of Gas-Assisted Urea Spray Gun
AUTHORS:
Zhifu Zhu, Peng Chen, Sheng Wang, Jianhua Gui, Wenxiao Wang
KEYWORDS:
Urea Spray Gun, Spray Characteristic, SMD, CFD Simulation, Experiment
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.7 No.3,
August
6,
2019
ABSTRACT: In this paper, the internal flow field and
external spray characteristics of the spray gun were simulated and analyzed by
establishing a coupling model of the gas-liquid two-phase flow of the spray
gun. The spray particle size and cone angle under different gas path pressures
were mainly studied. The calculation results showed that the spray particle
size distribution had a large span, but the overall spray particle size was
small. The liquid flow and the air pressure had a little influence on the spray
cone angle. The spray SMD was tested by a three-dimensional particle dynamic
analyzer (PDA), and the spray cone angle was photographed with a high-speed
camera. The test data was basically consistent with the simulation results. The
experimental results showed that the model can accurately simulate the internal
flow field of the spray gun and the atomization process of urea. It can be used
to analyze the characteristics of urea spray and provide a theoretical basis
for the optimal design of urea spray gun.