牛顿流体中的固体颗粒运动模型分析及应用  

Analysis and application of model for solid particle movement in Newton fluid

作　　者：董长银[1] 栾万里[2] 周生田[3] 张琪[1] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]辽河石油勘探局钻井一公司,辽宁盘锦042700 [3]中国石油大学数学与计算科学学院,山东东营257061

出　　处：《中国石油大学学报（自然科学版）》2007年第5期55-59,63,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家'863'计划项目(2006AA09Z351)

摘　　要：从更普遍的情况出发,重新推导了任意流体流速及固液密度条件下的牛顿流体中的固体砂粒运动(沉降或上升)末速计算模型。根据已有的实验结果,分析比较了过渡区和层流区各种阻力系数模型计算的准确性,以及各流型之间过渡时的基本变化特征。结果表明,层流区各阻力系数模型计算结果相差不大;过渡区阻力系数计算模型中,窦国仁、董长银、Кляико、S.H.A llen、冈恰洛夫5种公式准确性依次变差;层流区向过渡区的计算结果转变比较平滑,而过渡区向紊流区的转变明显不连续。Considering more universal conditions, an integrated model for solid particle movement （ascending or descending） in Newton fluid was developed with any fluid velocity and density of solid and fluid. According to the present experiment resuits, the precision of all calculation correlations for resistance factor in transition zone and laminar zone was compared. And then, the particle＇s moving velocity transition characteristics from one flow pattern to another were analyzed. The analysis indicates that the results of all resistance factor calculation models in laminar zone are Very closing with good coherence. In transition zone, the calculation precision of Dou, Dang, Кляико, Mien and Gang＇s resistance factor modal, in this order, varies from good to bad. The moving velocity changes smoothly from laminar zone to transition zone, and jumps from transition to turbulent zone.

关 键 词：牛顿流体 颗粒沉降 运动末速 阻力系数 沉降实验 

分 类 号：TE358.1[石油与天然气工程—油气田开发工程]