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对流
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  convection
    THE THERMOCAPILLARY CONVECTION IN THE LIQUID BRIDGE WITH DIFFERENT PRANDTL NUMBER
    液桥中不同Prandtl数流体的热毛细对流
短句来源
    DOUBLE-DIFFUSIVE CONVECTION AND CRYSTAL GROWTH
    双扩散对流与晶体生长
短句来源
    Natural Convection of Non-Newtonian Fluids inside Porous Media in a Vertical Cylindrical Caviyt
    竖直圆柱空间多孔介质中非牛顿流体自然对流
短句来源
    Tension Spline Numerical Method for Solving High Ra Number Natural Convection Problem
    高Ra数自然对流问题的张力样条数值模拟
短句来源
    Stability Analysis of Linear and Nonlinear Periodic Convection in Thermohaline Double-Diffusive Systems
    温盐双扩散系统对流扩散周期解的线性与非线性稳定性分析
短句来源
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  advection
    High Order Schemes for Pure Advection Equation and Fractional-Superpositional Algorithm for Scalar Transport Equation
    纯对流方程的高阶格式及标量传输方程的分步—迭加算法
短句来源
    Dynamical Bchaviour on Two Classes of Models of Lagrangian Advection
    两类Lagrangian对流模型的动力学性质
短句来源
    The methodology for the Navier-Stokes equations takes advantage of time discretization byàla Marchuk-Yanenko operator splitting in order to treat separately advection, body-imbedding and incompressibility.
    基于算子分裂的àla Marchuk-Yanenko时间离散格式,将虚拟区域情形下的不可压Navier-Stokes方程分裂成非线性对流扩散方程、准Stokes方程和虚拟区域情形下的线性椭圆型方程三个子问题。
短句来源
    The N S equation is split into advection step, diffusion step and propagation step with the time split operator.
    运用时间分裂控制(Split Operator)法 ,将N S方程分为对流步、扩散步和传播步。
短句来源
    This paper presents a fraclional-superpositional algorithm for advection-diffusion-reaction scalar transport equation, and three new schemes of high accuracy for one-dimensional pure advection equation based upon the characteristic theory and three-node interpolation inYolving first derivative.
    本文基于迭加法则提出对流扩散反应型标量传输方程的一种分步——迭加算法,认为传输量的变化由两部分所贡献,其一是计算初始时刻传输量的对流扩散,其二是反应项的对流扩散。 在两个分步的计算中,采用算子分裂法求解形式上与原方程不含反应项时的形式类似的对流扩散方程。
短句来源
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  “对流”译为未确定词的双语例句
    Some New Discontinuous Galerkin Method For Convection-Dominated Diffusion Problems
    对流占优扩散问题的某些新型间断有限元方法
短句来源
    A Lagrangian Compact Differencing Scheme for Diffusion-Convection Equation
    对流-扩散型方程的一种拉格朗日型紧致差分格式
短句来源
    A Mixed Euler-Lagrange Method for the Numerical Solution of Convection-Diffusion Equation
    对流—扩散型方程数值解的混合E—L方法
短句来源
    An Optimal Difference Scheme with High Accuracy for the Convection-diffusion Equation
    对流-扩散方程的一种高精度优化差分格式
短句来源
    A Second Order Fractional Step Method for N-S Equation and Heat Transfer Problem
    二阶时间分裂法求解N-S方程及对流传热问题
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  convection
Mixed finite element method for the convection-dominated diffusion problems with small parameterε
      
for Sobolev equations with convection-dominated term
      
for linear Sobolev equations with convection-dominated term is given.
      
Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel
      
We obtained the pattern of mantle convection for East Asia and the West Pacific.
      
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  advection
The downward advection of trophogenic waters was found to create conditions for the extensive growth of microorganisms capable of decomposing and mineralizing organic carbon, nitrogen, and phosphorus in deep water layers.
      
The mixing of the seawater and groundwater occurs as a result of advection processes, the most important of which is wave percolation.
      
The equation of advection-diffusion transport of a reactive solute in a stream is solved by different methods.
      
A simple procedure is proposed for predicting this concentration based on an advection-diffusion model and field observational data.
      
Equations of flow in water-saturated porous medium and advection diffusion of dissolved salts are used to study salt transport and accumulation in subsoil water.
      
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In this work an analysis of steady free convection flow of water at 4C passing a vertical infinite porous plate in a rotating system is considered. Approximate solutions for the coupled non-linear equations are obtained for the velocity and the temperature. The effect of E (Eckman number) is discussed, when P (Prandtl number)=11 .4, which corresponds to water at 4°C.

本文研究了旋转系统中4℃的水流经竖立的无穷大多孔板时定常自由对流的分析解.求得了速度和温度的耦合非线性方程组的近似解.讨论了爱克曼数E’的效应(普朗特尔数为P=11.4,相当于4℃的水)

This paper presents a numerical technique for calculating the steady turbulent flow of a incompressible fluid around the stern of body of revolution and its wake by using a streamline iteration method. The turbulence model used is a two-equation (K-ε) model devoloped by Harlow and Nakayama. In this numerical calculation, however, there are some features:1) The convection terms of governing equations for total pressure, turbulent kinetic energy and its dissipation rate in turbulent flow are written in the form...

This paper presents a numerical technique for calculating the steady turbulent flow of a incompressible fluid around the stern of body of revolution and its wake by using a streamline iteration method. The turbulence model used is a two-equation (K-ε) model devoloped by Harlow and Nakayama. In this numerical calculation, however, there are some features:1) The convection terms of governing equations for total pressure, turbulent kinetic energy and its dissipation rate in turbulent flow are written in the form of the variations of tlvese variables along streamlines, and for static pressure the radial pressure gradient equation is used. In this form, these equations can be more eonvienicntly be dealt with in numerical calculation. 2) By means of a system of coordinate transformations, the external flow field extending to infinity in both radial and axial directions is transformed into an internal flow field within a finite region. Therefore, free-stream condition and parabolic flow condition may be used on the outer boundary and downstream boundary repectively. The boundary layer flow and potential flow outside can be resolved by an uniform system. 3) Assumptions for a thin boundary layer and partially parabolic flow, etc. are not needed.A numerical example is gaven to show the fair agreement between the theoretical predition by the present method and experimental results.

本文提出一种利用流线迭代法计算回转体尾部和尾流的定常、不可压缩湍流流动的数值方法。采用Harlow-Nakayama提出的两方程(K-ε)湍流模型。在数值计算上.1)把湍流流动中的总压,湍动能和它的耗散率方程中的对流项写成这些量沿流线变化的形式,静压采用径向压力梯度方程。2)用坐标变换,把径向和轴向都延伸至无穷远的流动区域变换到有限区域内,在外边界可使用自由来流条件,边界层流动和层外的势流流动可用统一的方程组求解。3)没有部分抛物型和薄边界层等种种近似假定。计算实例表明,理论预测和试验结果吻合。

Distributions of temperature and velocities of natural convection in vertical rectangular slot have been obtained by numerical analysis. According to the curves of local and average heat transfer coefficients, the effect of Rayleigh number and aspect ratio was studied. The numerical results indicate that the aspect ratio between 3-20 has a substantial effect on average Nusselt number.Computed values compare favorably with available experimental results.

本文用数值分析方法求解了垂直平壁封闭空腔中自然对流的速度和温度分布。在对局部和平均换热系数分析的基础上,整理了瑞利数Ra._L和高宽比H/L对平均换热系数的影响。结果表明,高宽比为3~20范围内对平均努赛数(?)u._L有着明显的影响。计算数据与已有的经验公式作了比较,结果是满意的。

 
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