高压无气喷涂喷雾流场的CFD仿真分析  

CFD Simulation Analysis of High Pressure Airless Spraying Spray Flow Field

作　　者：董滨毓 周宏[1] 吉沭闯 DONG Binyu;ZHOU Hong;JI Shuchuang(School of Naval Architecture&Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶工程》2024年第11期131-139,共9页Ship Engineering

摘　　要：为充分了解船舶内场涂装常用的高压无气喷涂技术的雾化原理,改进喷涂工艺,提升喷涂质量,采用计算流体力学(CFD)方法对高压无气喷涂喷雾流场进行仿真分析。针对高压无气喷涂质量缺陷,分析高压无气喷涂的雾化机理,采用FLUENT软件内置的转杯雾化模型建立流场并设置边界条件,研究不同工艺参数下的喷涂效果。研究发现:喷涂压力越大,雾化的液滴直径越小,液滴运动速度越大,产生的漆膜厚度越大;喷涂间距的变化对液滴速度的影响不大,但会导致喷涂区域变大,液膜变薄;外界风速越大,漆膜厚度损失越多。In order to fully understand the atomization principle of high pressure airless spraying technology,which is commonly used in ship interior spraying,and to improve the spraying process and enhance the spraying quality,the computational fluid dynamics(CFD)method is used to simulate and analyze the spray flow field of high-pressure airless spraying.For the quality defects of high-pressure airless spraying,the atomization mechanism of high pressure airless spraying is analyzed,and the built-in rotating cup atomization model of the FLUENT software is used to establish the flow field and set the boundary conditions,and the spraying effect under different process parameters is studied.The results show that the larger the spraying pressure,the smaller the diameter of the atomized droplets,the higher the velocity of the droplet movement,and the greater the thickness of the film produced.Changing the spraying spacing has little effect on the droplet velocity,but will result in a larger spraying area and a thinner liquid film.The greater the external wind speed,the greater the loss in film thickness.

关 键 词：高压无气喷涂 扇形喷嘴 喷雾 流场仿真 

分 类 号：U671.918[交通运输工程—船舶及航道工程]