摘要
利用FLUENT仿真软件对油雾喷射碰壁过程中油膜的形成进行数值模拟;模拟条件如下:喷射速度v分别为30,80,100和120 m/s;油雾颗粒粒径d分别为3,5,7和10μm;喷雾距离D为50和65 mm.在上述条件下得到油膜厚度等高图,从而得出喷射速度、油雾颗粒粒径、喷雾距离对油膜厚度和油膜比率的影响.模拟结果表明:喷雾距离增加时油膜厚度和油膜比率都减少;在喷雾距离为50 mm时,速度为80 m/s的油膜厚度和油膜比率比较理想;同样条件下,油雾颗粒粒径在5μm左右时,油膜厚度和油膜比率较大.
The factors which affect the oil film formation when the oil mist is spraying against the metal plate were studied via a numerical simulation with the software FLUENT,then the contour maps of oil film thickness were plotted.In the simulation the spray speeds were 30,80,100 and 120A4!m/s;the oil drop sizes were 3,5,7 and 10A4!μm;and the spraying distances were 50 and 65A4!mm.The results showed that the oil film thickness and film forming ratio both decrease with increasing spraying distance,and both are comparatively perfect when the spraying distance is 50mm with the spray speed 80A4!m/s.Meanwhile,both become bigger when the oil drop size is about 5A4!μm.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第2期285-287,共3页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50875040)
关键词
油膜
油雾润滑
凝缩嘴
喷射速度
喷雾距离
油膜厚度
油膜比率
film
oil mist lubrication
constricting nozzle
spray speed
spraying distance
film thickness
film forming ratio
