摘要
为了获取温度对油水分离动态特性的影响规律,考虑了油水汽三相流、水滴蒸发相变等因素,建立了滤油机的油水分离流场的RSM数学物理模型以及水滴运动蒸发的相变方程;获得了不同温度对油水分离过程中的油水汽三相体积分数分布情况及其对轴向脱水率的影响规律。结果表明在不同温度情况下油水汽三相流的动态特性较为复杂,温度对油水分离的脱水效率的影响较为显著,为深入研究滤油机的油水分离机理奠定了前期基础。
Abstract： In order to obtain the influence law of temperature on the dynamic characteristics of water/oil separation process, a Reynolds Stress Model （RSM） of the water/oil separation flow field in Vacuum oil purifier and the phase transition equations of water droplets evaporation are established by considering factors such as the water/oil/vapor three-phase flow, water droplets evaporation phase transition etc.. The influences of different temperature on oil/wa- ter/vapor three-phase volume fraction distribution in the water/oil separation process and the axial dehydration rate are obtained. The results show that the dynamic characteristics of the oil/water/vapor three-phase flow in different temperatures is rather complex, and the influence of temperature on the efficiency of dehydration of the water/oil separation is significant, and the present study provides a theoretical foundation for the further research of the wa- ter/oil separation mechanism of the vacuum oil purifier.
出处
《机械科学与技术》
CSCD
北大核心
2014年第2期233-238,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51375516)
重庆市自然科学基金项目(cstc2011jjA90001)
重庆市教育科学技术研究项目(KJ120721)
重庆科技攻关重点项目(CSTC
2009AB3234)资助
关键词
温度
油水分离
三相流
脱水率
boundary conditions
dehydration
drops
efficiency
evaporation
finite volume methca
flow fields
multiphase flow
temperature
turbulence models
volume fraction
water/oil separation
three-phase flow
dehydration rate
