Flow rate distribution of the non-steady flow of second-order fluid in eccentric annulus with the inner cylinder reciprocating axially;
二阶流体在内管做轴向往复运动的偏心环空中非定常流的流量分布
Pressure gradient of unsteady flow of fluid in eccentric annulus with the inner cylinder reciprocating axially;
流体在内管做轴向往复运动偏心环空中非定常流的压力梯度
Computer simulation of screw flow of power-law fluid in eccentric annulus.;
幂律流体偏心环空螺旋流计算机仿真
CFD numerical simulation of eccentric annuli flow field;
基于计算流体动力学的偏心环空流场数值模拟
Velocity distribution of viscoelastic fluid in eccentric annuli with the internal rod axial moving;
黏弹性流体在内管做轴向运动的偏心环空中的速度分布
Flow rate calculation of unsteady flow of power law fluid in the eccentric annuli with inner cylinder in axially reciprocating motion;
幂律流体在内管做轴向往复运动的偏心环空中非定常流的流量计算
It is difficult to set an accurate mathematical model up for the flow in eccentric injection well.
本文针对偏心注水井的流量建立准确数学模型难的问题,以PIC单片机为主控单元,引用模糊控制理论,通过对流量进行对比分析来控制电机转动带动井下调节阀以实现控制流量在理想范围内的目的,分别从硬件和软件两个方面详细介绍了基于模糊控制的偏心注水井分层流量测调系统的设计;最后,采用USB通讯技术把采集的数据上传到上位机进行回放,以满足工作人员对井下情况进行全面了解。
The eccentric annulus flow fields, whose physical models are set in Shapemaker-Geometry VR of PHOENICS, are calculated numerically with wall function that is used to describe boundary condition.
在PHOENICS软件的VR编辑环境中建立了偏心环空流的物理模型,采用k ?ε湍流计算模型,应用壁面函数法处理固壁边界,对偏心环空流场进行了数值计算。
The common study methods and its present condition of eccentric annulus flow in petroleum production are extensively investigated.
本文对石油生产中常见的偏心环空流问题的研究方法进行了广泛调研,了解了关于偏心环空流问题研究的现状;详细介绍了目前流行的各种CFD通用软件,着重阐述了PHOENICS流体计算软件的特点、计算原理及应用情况;通过圆管和套管内流体的简单模拟,验证了计算流体力动力软件PHOENICS的准确性;利用PHOENICS的(Utilities中的Shapemaker-Geometry)功能在三维笛卡尔直角坐标系下建立了同心和偏心环空流动的物理模型,采用κ-ε湍流模型和壁面函数法,对牛顿流体、幂律流体、宾汉流体的偏心环空流动进行数值计算,并利用Sci、Origin、Photoshop等后处理软件对数据、图片做了处理,得到了偏心环空流动的速度、压力、湍动能等流动参数的分布情况,在不同流体性质下研究了不同流速、偏心度、流性指数、屈服值、塑性粘度等条件对偏心环空流场特征的影响。
The Research of Unsteady Flow of Viscoelastic Fluid in Eccentric Annulus;
粘弹性流体偏心环空非定常流的研究
A CFD Simulation of the Flow Field of a Power Law Fluid in an Eccentric Annulus
幂律流体偏心环空流场的CFD模拟
Numerical Calculation of Unsteady Flow of Viscoelastic Fluid in the Eccentric Annulus;
粘弹性流体偏心环空非定常流的数值计算
Experimental Study on the Helical Turbulent Flow of Power Law Fluid in Eccentric Annulus with PIV Technology;
幂律流体偏心环空螺旋流紊流的PIV实验研究
Research of Power-Law in eccentric pipeline with PIV Experiment and Numerical simulation
幂律流体偏心环空PIV实验与数值模拟研究
Numerical calculation of unsteady flow of viscoelastic fluid in eccentric annulus
黏弹性流体在偏心环空中非定常流的流量计算
Unsteady Flow of Viscoelastic Fluid in Eccentric Annuli with Inner Cylinder Reciprocating Axially;
粘弹性流体在内管做轴向往复运动的偏心环空中的非定常流
Numerical Calculation of Force Acting on the Inner Cylinder by Viscoelastic Fluid While the Cylinder Moving Axially in Eccentric Annulus;
偏心环空中做轴向运动的内管所受粘弹性流体作用力的数值计算
Numerical Calculation of Steady Flow of Viscoelastic Fluid in the Eccentric Annulus with Internal Tubing Moving Axially.;
粘弹性流体在内管做轴向运动的偏心环空中定常流动的数值计算
Unsteady Flow of Power-law Fluid in Eccentric Annuli with the Inner Cylinder Reciprocating Axially;
幂律流体在内管做轴向往复运动的偏心环空中的非定常流
PIV experimental study on the axial velocity's distributing law of power law fluid's helical flow in eccentric annulus
幂律流体偏心环空螺旋流轴向速度分布规律的PIV实验研究
The study of eccentric annular clearance Reynolds number and laminar flow zone calculation methods for power law fluid
幂律流体偏心环空间隙雷诺数及层流区域计算方法研究
Numerical calculation of average flow rate of the unsteady flow of a viscoelastic fluid in eccentric annulus with the inner cylinder reciprocating axially
黏弹性流体在内管做轴向往复运动的偏心环空中非定常流的平均流量计算
Numerical calculation of pressure gradient of the non-steady flow of power-law fluid in eccentric annulus with the inner cylinder axial reciprocating
幂律流体在内管做轴向往复运动的偏心环空中非定常流压力梯度的数值计算
eccentric ring emergency governor
偏心环式危急保安器
Thin head semi-tubular rivets
GB/T875-1986偏平头半空心铆钉
Calculation of Eccentric Wellbore Pressure Drop and Air Volume Requirements in Air Drilling
空气钻井偏心井筒压力及注气量计算
Circumstances and the intolerance of little men had begun to make me lose faith.
环境和小人们的偏执，使我失去了信心。