使用双极坐标系研究流体在偏心环空内的流动。
The bipolar coordinate system in which the two boundary circles of eccentric annuli become the coordinate surfaces is used.
石油和化工中许多问题需要求解非牛顿流体偏心环空螺旋流。
Many problems in petroleum and chemical industry can be reduced to the solutions of the helical flow of Non-Newtonian fluid in eccentric annular space.
本文分析计算了石油钻井工程偏心环空中内管转动的螺旋流动。
In this paper the spiral velocity of eccentric annulus with inner pipe turned is analysed and computed.
利用多元参数回归的方法，建立了求解偏心环空波动压力的经验模式。
The experience model of eccentric annular has been established by using multiple regression analy8is.
根据环隙科特流理论导出了滑动轴承偏心环隙的单位宽循环流量公式。
The paper derives the unit discharge formula of a journal sliding bearing according to the theory of Couette flow between two concentric cylinders.
建立了偏心度在井眼内按线性及正弦规律变化的偏心环空流问题理论模型。
The model established in this paper puts forward two situations, a linearly and a sinusoidally skewed annulus.
在国内外首次研究了结构尺寸对极限偏心环缝中液氮的沸腾换热特性的影响。
In this paper, the effect of configuration size on the liquid nitrogen thermosyphon boiling heat transfer behavior in extreme eccentric annulus is studied for the first time.
本文利用流变学原理，讨论了流体的流变性能对偏心环空注水泥顶替效率的影响。
In this paper, on the basis of rheological theory, we have discussed the effect of the slurry properties on the mud displacement efficiency in eccentric annulus.
提出了牛顿流体与宾汉流体在该偏心环空中流动的流场解析解及幂律流体流场的数值解。
The analytic solution for flowing field and the numerical solution for power law flow field of Newtonian and Bingham fluids flowing in eccentric annulus ale proposed.
在大量室内实验的基础上，应用相似分析方法，研究了泥浆模拟液在偏心环空中的流动规。
Based on indoor experiments with similar analytic methods, the flowing regularity is studied of modelling mud during eccentric circulation.
本文应用流体力学中的运动微分方程，建立了宾汉流体在倾斜偏心环空中的层流流动模型。
Using the differential motion equation in fluid mechanics, this paper developed the flow models of the laminar flow of Bingham's fluid in an inclined eccentric annulus.
本文全面地研究了幂律流体和宾汉流体在偏心环空中层流螺旋流的流动规律与流动状态的判别。
This paper studies the flow law of the laminar helical flow of the power law fluid and Billgham fluid in eccentric annular space and the determination of the flow state.
对水平井段偏心环空中幂律流体和宾汉流体轴向流层流流场作了理论分析。 把偏心环空视作变外径的同心环空。
The theoretical analysis of flow properties of power-law fluids and Bingham fluids in the eccentric annuli of horizontal section of wells is made.
这些阀门具有一个偏心安装的磁盘和聚四氟乙烯或316不锈钢密封环。
These valves feature an eccentrically mounted disk and a PTFE or 316 stainless steel seal ring.
水环式真空泵的圆柱形泵壳内安装一个偏心的牙状叶轮。
Water Ring Vacuum pump cylindrical shell to install a pump eccentric impeller-shaped teeth.
分析结果表明，环空偏心距、内管冲程、内管冲次对瞬时流量分布的影响较为明显。
Analyses indicate that the eccentricity, the stroke and the frequency of the inner cylinder all affect the instantaneous flow rate distribution remarkably.
无论是大偏心受压柱还是小偏心受压柱，采用纵环向联合粘贴的加固柱承载力及延性进步幅度较明显。
Whether it is big or small eccentric eccentric column , using paste to the Joint Central longitudinal reinforcement of the column increases the bearing capacity and ductility than the obvious.
分析结果表明，环空偏心距、内管冲程是影响瞬时流量分布的主要因素。
Analyses indicate that the eccentricity and stroke of the inner cylinder are the main factors that affect the instantaneous flow rate distribution.
本文介绍偏心度为井深函数的实际环空中压降计算的理论模型和便于现场使用的简化计算方法。
This paper presents a theoretical model for realistic annular pressure loss calculation in which the eccentricity is a function of the well depth and a simplified method for field calculations.
在内圈的一端，轴承通过偏心锁定环(图1.7)或者两个定位螺钉(图1.8)被固定在轴上。
At one end of the inner ring, the bearing is clamped to the shaft with an eccentric locking ring (Figure 1.7) or with two setscrews (Figure 1.8).
提出了关于变偏心度环空中计算非牛顿流体在层流、过渡流及紊流状态下压降、流速的方法；给出了流场特性分析及数值模拟结果。
The method is presented to simulate pressure losses and flow velocities in skewed narrow annular geometries for laminar, transition and turbulent non-Newtonian flow.
大气量时应用偏心气锚安装气举阀与地面单流阀两步卸气，实现了下部产层和油套环空自动卸气。
Ortherwise, the eccentric gas anchor, gas lift valve and surface check valve are installed to automatically unload the gas from the deeper layer and annulus between the tubing and the casing.
大气量时应用偏心气锚安装气举阀与地面单流阀两步卸气，实现了下部产层和油套环空自动卸气。
Ortherwise, the eccentric gas anchor, gas lift valve and surface check valve are installed to automatically unload the gas from the deeper layer and annulus between the tubing and the casing.
应用推荐