查询词典 viscous flow

It is good at both high resistance and low resistance area of debris flows. It is good consistent for the measuring velocity of otherwise field observation data of debris flow and viscous mudflow by this empirical equation.

由一系列野外观测资料得到的由泥石流不均匀系数、泥石流运动底部纵比降和水力半径计算的粘性泥石流运动平均速度经验公式，能适应各种类型的泥石流沟，与其它系列的观测资料对比有很好的一致性，与粘性泥流的观测资料对比也很接近。

Rheological behavior of non-Newtonian fluid in viscous oil reservoirs and flow characteristics in water flooding are important factors influencing oil recovery rate and oil recovery factor.

稠油油藏原油的非牛顿流体流变特性和在注水开发中的渗流特性是影响采油速度和原油采收率的重要因素。

The phase shift between flow and potential is caused by the relaxation time of viscous and thermal.

系统的平衡过程不再是瞬时完成的，存在着弛豫时间。

Aimed at ultra-deep and viscous oil reservoir′s feature in the Tahe Oil-Field, combining blending light dropping viscosity evaluation, utilizing polyphone pipe flow calculation, on the basis of the study of high viscosity oil characteristic and deep well lifting technique, deep well high-viscosity oil blending light dropping viscosity optimum design model is ana.

针对塔河油田超深层稠油油藏的特点，在对稠油特性及深井举升工艺研究基础上，结合室内掺稀降粘评价，利用多相管流计算方法分析深井稠油掺稀降粘优化设计模型，对掺稀降粘工艺在塔河油田的应用在理论上进行了深入分析和评价。

Considering the characteristics of high Reynolds number viscous flows, a normal directional advancing layer method is adopted to generate points and combine anisotropic clouds of points in the boundary region, and a quadrantal point mulling strategy is employed to construct isotropic clouds of points in the residual flow region automatically.

针对高雷诺数粘性流动的特点，在附面层内的粘性影响区域采用法向层次推进布点的方法形成离散点云，在附面层外的计算区域内实行填充式布点的方法形成离散点云。

In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

By solving the optimum -- diameter equations for the case of critical Reynold number, it has been found possible to decide whether any given flow will be turbulent or viscous in a pipe of optimum diameter. At these equations and ...

本 文所推导的公式及算图都是以我国目前的价格指标为依据，因此应用它来选取经济管径应当是适合于我国情况的。

By solving the optimum -- diameter equations for the case of critical Reynold number, it has been found possible to decide whether any given flow will be turbulent or viscous in a pipe of optimum diameter. At these equation...

本 文所推导的公式及算图都是以我国目前的价格指标为依据，因此应用它来选取经济管径应当是适合于我国情况的。

The results showed that compared with smooth surface, there was secondary vortex in micro flow field;, the viscous sub-layer in the near region of riblet surface was thicker; turbulence intensity was depressed and riblet surface was hydrophobic.

研究表明，与光滑表面相比，脊状表面微观流场结构中存在2次涡，近壁区的黏性底层厚度比平板的要厚得多，湍流度显著降低，且脊状表面表现出明显的疏水性。

The results showed that compared with smooth surface, there was secondary vortex in micro flow field, the viscous sub-layer in the near region of riblet surface was thicker; turbulence intensity was depressed and riblet surface was hydrophobic.

研究表明，与光滑表面相比，脊状表面微观流场结构中存在"二次涡"，近壁区的黏性底层厚度比平板的要厚得多，湍流度显著降低，且脊状表面表现出明显的疏水性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐