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- The fluid flow equations are solved by means of the finite element method based on Galerkin method, and wellbore is taken as the boundary of elements. 与以往不同的是,该模型应用有限元方法进行差分离散,并将油水井视为单元的边界进行处理,选用任意形状六面体(曲边)单元和等参元变换以及隐式压力和隐式饱和度交替求解的方法。
- Derive the governing flow equation for an aquifer. 推导地下含水层的流体方程式.
- Using the fluid flow model and monod equation of reaction kinetics, kinetic model of UASB reactor was established and the parameters were estimated. 运用流动模型和Monod方程,建立了UASB反应器稳态模型,并对模型参数进行了估计。
- Some improvement on the discrete scheme of convective term in fluid flow equations 关于流体流动方程中对流项离散格式的一些改进
- Can be used for both on-off and throttling control of fluid flow. 可用作流体流量的启闭和节流控制。
- In his paper, Perelman added a new term to the Ricci flow equation. 帕瑞尔曼在论文中多补了一项到瑞奇流方程式里。
- A new and uniform method to express the constitutive equation for analyzing non-Newtonian fluid flow was put forward on the analyses of all items in momentum equation. 为了解决此问题,在分析流体运动方程中各项物理意义的基础上,给出了一种统一的本构方程的书写形式,用于研究非牛顿流体圆管和环空管流层流流动规律。
- Based on the mechanics of fluid flow and the theory of electroosmosis,the equation of single-phase fluid flow in porous media under electric field was deduced. 根据渗流力学和电渗理论,推导了外电场作用下多孔介质中单相流体渗流方程,建立了有限元数值模型,采用有限元方法进行了数值模拟。
- Design of downhole oil-water separation system and double fluid flow pump. 井下油水分离系统及往复式双液流泵设计。
- Measurement of fluid flow in pipes using orifice, nozzle, and Venturi. 用孔板,管接头和文丘里管测量管道中的液体流量。
- This study is a reference in understanding fluid flow mechanism in fract... 该研究对于认识缝洞型油藏流体流动机理具有一定的借鉴意义。
- Because of fluid flow through the liquid and transfer the energy impact. 由于流道内液体是通过液体撞击而传递能量。
- The Ricci flow equation has a similar effect on curvature, morphing a manifold to even out all the bumps and hollows. 瑞奇流方程式对于曲率有类似的效应,能把流形上的凹凸之处抚平。
- Ball chatter and internal damage may result if fluid flow is too turbulent. 如果流体出现比较严重的湍流,可能导致球体震动和内部损坏。
- Grinding fluid flow under a surface grinding wheel is analyzed using hydrodynamic lubrication theory. Considering the effects of permeability of the grinding wheel, a three dimensional Reynolds equation of finite line contact is yielded. 根据流体动压润滑理论,分析了平面砂轮磨削时磨削液的流体动压效应,并考虑砂轮渗透度的影响,推得了有限定线接触条件下磨削液三维流动的Reynolds方程。
- By coupling fluid flow in lateral borehole and percolation in reservoir, an equation to calculate the optimum length of horizontal segment has been theoretically derived, forming a practic... 水平井段的长度不仅影响水平井的单井产量、钻井成本和泄油面积,而且影响油田的钻井数目和开发投资。
- Using the fracture-cave reservoir carbonate reservoir in Tahe Oilfield,the choke flow equation was derived based on the principle of dimensional analysis and the multiple sta. 以塔河油田奥陶系缝洞型碳酸盐岩油藏为例,利用基于量纲分析原理的瑞利法和基于现场资料的多元线性回归方法建立了适用于缝洞型油藏的油井嘴流产量公式。
- In the vehicle tracking module, it mainly study the Optical Flow Equation (OFE) and the three-step block matching algorithm, and choose the later by writing computer programs. 在车辆跟踪模块,重点研究了运动估计算法中基于光流方程的方法和三步块匹配算法,并编写计算机程序对算法进行了验证和比较,确定采用三步块匹配算法进行车辆运动估计。
- But it will bring some error because of the change of inner energy in practical fluid flow calculation, it is necessary to discuss Bernoulli equation on its accuracy whether to meet the requirements. 但由于实际流体流动过程中有内能变化,计算时会带来一定的误差,因此有必要对柏努利方程能否满足工程对精度的要求进行论证。
- Firstly, the flow equation is establish according to the structure and parameters of power system, the model and parameters of generator and its excition governing system. 根据电力系统的结构和运行参数、发电机组及其励磁系统、调速系统模型和参数数据,建立潮流方程,用PQ分解法,算出电力系统的潮流;