摘要
为了研究喷嘴结构对射流流量和流量修正系数的影响,采用基于FLUENT的大涡数值模拟方法对喷嘴三维射流流场进行单相流仿真,通过喷射滑油称重的方法测量喷嘴射流流量,并用测量结果对单相流仿真进行合理性验证。结果表明:喷孔直径、喷孔轴向长度和喷孔轴线与喷孔上游圆管轴线的夹角,均会影响水头损失,从而影响喷嘴射流流量;随着喷孔直径、喷孔轴线与喷孔上游圆管轴线的夹角增大,或者喷孔轴向长度减小,喷嘴射流流量修正系数逐渐增大。
In order to study the effects of structural parameters on volume flux and correction factor of jet of nozzles used lubricating gears, single phase flow model of the jet flow field of three dimen sional nozzles is simulated by employing the Large Eddy Simulation based on the FLUENT. The rationality of the simulation results of the single phase flow model of jet flow field of three dimensional noz- zles were demonstrated by the volume flux of jet oil measured by the method of weighting jet oil. The results indicate that the volume flux of jet is influenced by the orifice diameter, the axial length of orifice and the angle between the axis of nozzle orifice and the axis of upstream flow channel influencing the water head loss. The correction coefficient of quantity of flow increases as the orifice diameter, the angle between orifice axis and upstream axis increase and as the ori- fice axial length decreases.
出处
《食品与机械》
CSCD
北大核心
2016年第3期104-108,共5页
Food and Machinery
基金
总装预研基金资助项目(编号:8130208)
关键词
喷嘴
润滑
大涡模拟
射流流量
流量系数
nozzle
lubrication
large eddy simulation
volume flux of
