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对流
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  advection
    Combing the MMOCAA "(The modified method of characteristics with adjusted advection, Jim Douglas. Jr., Numer. Math. (1999), Vol. 83: 353-369)" difference method with ENO, the ENO-MMOCAA difference method is proposed for covection-diffusion equation in the paper. The new method is free from oscillation near the steep front, with which the problem is solved by the MMOCAA difference method based on high-order Lagrange interplation.
    把ENO插值和MMOCAA“(The modified method of characteristics with adjusted advection,Jim Douglas,Jr.,Numer.Math.(1999),Vol.83:353-369)”差分方法相结合,提出了求解对流扩散方程的ENO-MMOCAA差分方法,避免了原来基于高阶Langrange插值的MMOCAA差分方法在解的陡峭前缘附近产生的震荡。
短句来源
    Combing the modified method of characteristics with adjusted advection (MMOCAA difference method proposed by Jim Douglas. Jr, Numer. Math., 1999,83:353-369) with the weighted essentially noil - oscillatory interpolation (WENO), the WENO - MMOCAA difference method is proposed for nonlinear covection - diffusion equation in the paper.
    本文把 J. Douglas 提出的调整对流的修正特征差分法 (MMOCAA, Numer. Math., 1999,83:353- 369 ) 和加权本质非振荡 WENO 插值相结合,提出了求解对流扩散方程的 WENO - MMO- CAA 差分方法。
短句来源
    The Modified Method of Characteristics with Adjusted Advection Based on WENO Interpolation for Nonlinear Convection-Diffusion Equation
    对流扩散方程的基于加权本质非振荡插值的调整对流的修正特征差分解法
短句来源
    Based on the priciple of the method of fractional steps, the two dimensional shallow equations arc divided into two parts of advection and diffusion.
    本文根据分步法原理,将平面二维不恒定流方程分成对流、扩散两个部分。
短句来源
    A numerical method based on the local linear analytical solution is given for the nonlinear advection diffusion equations.
    本文提出了数值求解对流扩散方程的局部解析算法。
短句来源
  convections
    A Cauchy Problem of Porous Medium Equations with Nonlinear Absorptions and Convections
    具有非线性吸收和对流项的多孔介质方程的一类Cauchy问题
短句来源
    This paper explores the existence of a generalized sol ution to a Cauchy problem ofporous Ynedium equations with nonlinear absorptions and convections when the Radon mea-sure in a certain RN serves as initial trace.
    本文研究同时具有非线性吸收和对流项的多孔介质方程以某RN中的Radon测度为初始迹的Cauchy问题广义解的存在性。
短句来源
    In this paper we discusses the existence of weak to the Cauchy problem for a class of nonlinear filtration equations with stringly nonlinear sources and convections,obtained the some estimates for the solutions.
    讨论具有强非线性源和对流项的一般渗流方程以RN中某有界连续函数u0(x)或某一Radon测度为初值的Cauchy问题弱解的存在性,得到关于解的一系列重要估计.
短句来源
    In this paper we discusses the existence and uniqueness of weak solutions to the cauchy problem with some Radon measure on R N as it initial trace for a class of general filtrations equations with strongly nonlinear sources and convections.
    讨论具强非线性源和对流项的一般渗流方程以RN中某一Radon测度为初始迹的Cauchy问题弱解的存在唯一性.
短句来源
    In this paper, the nonnegative finite travelling waves of nonlinear parabolic with convections is studied. The necessary and sufficient conditions for the uniqueness, local existence, global existence and blowing up in finite time of the travelling waves is obtained.
    研究了一类带有对流项的非线性抛物型方程的非负有限行波解.得出了该方程解的唯一性,局部存在性,整体存在性,和“爆破”的充分必要条件.
短句来源
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  convection 
    BLOCK ADI METHOD FOR THE TWODIMENSIONALCONVECTIONDIFFUSION EQUATION
    解二维对流扩散方程的块ADI方法
短句来源
    The Block ADI(Alternating Direction Implicit)method for solving the twodimensional convectiondiffusion equation is developed in this paper.
    构造了解二维对流扩散方程的块交替方向隐式(ADI)方法。
短句来源
    A threepoint scheme with high accuracy is presented in this paper to solve numerically the convectiondiffusion equation of the pollutant concentration.
    通过局部区间级数展开的方法,构造了污染浓度对流扩散方程的任意N阶精度的三节点差分格式.
短句来源
    In this paper,an exponentialtype implicit scheme for the twodimensional convectiondiffusion equation is given,and iterated by AGE which has the obvious property of parallelism.
    给出了一种求解二维对流扩散方程的指数型隐格式,并采用具有并行性质的AGE迭代法对其求解.
短句来源
    A characteristicdifference method for some threedimensional nonlinear convectiondiffusion equation is discussed,and its error estimates based on linear or quadratic interpolation are obtained
    讨论三维非线性对流-扩散方程第三边值问题的特征-差分方法,基于正六面体27点三二次插值给出了误差估计.
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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 Couvective--Diffusion Flood Wave Model and Its Calculation
    对流—扩散洪水波模型及其计算
短句来源
    On the Second Upwind Difference Scheme for the Convection-Diffusion Equation
    关于对流扩散方程的第二逆风差分格式
短句来源
    The Design of the Finite Difference Schemes for Diffusion-Convection Equation(Ⅱ) Pure Diffusion and Diffusion-Convection Equations
    对流-扩散方程的差分格式设计(Ⅱ) 纯扩散方程和对流-扩散方程
短句来源
    Adaptive Finite Element Method for Convection -Diffusion Equation in One Dimension
    对流-扩散方程的自适应变换有限元方法
短句来源
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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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  convections
Numerical analysis of thermal convections in a three-dimensional cavity: Influence of difference in approximation models on nume
      
The behavior of the critical temperature gradient is discussed in terms of various parameters of the system for both stationary and overstable convections.
      
Convections over Indo-China Peninsula and its surrounding areas further increase after the splitting.
      
UHI induced local air convergence and initiated the thunderstorm convections.
      
This isotopic constancy is incompatible with multiple, small, independent hydrothermal cells of the East Pacific Rise type, and fits much better with a model of hydrothermal convections driven by "magmatic floor heating".
      
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1. The behavier of the autocatalytic electrode processes under constant current on planar and spherical electrode is discnssed. It is noted that there exists a characteristic maximum point on the potential-time curve. The inflnences of convection in solntion and curvature of electrode surface are also discussed.3. The current time curve of the autocatalytic electrode processes under constant potential on planar electrode is studied. There exists a characteristic minimum point on this curve.3. The method of determining...

1. The behavier of the autocatalytic electrode processes under constant current on planar and spherical electrode is discnssed. It is noted that there exists a characteristic maximum point on the potential-time curve. The inflnences of convection in solntion and curvature of electrode surface are also discussed.3. The current time curve of the autocatalytic electrode processes under constant potential on planar electrode is studied. There exists a characteristic minimum point on this curve.3. The method of determining the specific rate constant o?the autocatalytic reaction from the curves mentioned above is indicated.

1.讨论了在恒定电流电解下自催化的电经过程的情况,其特征是超电压对时间的曲线上出现极大点。 2.讨论了在恒定电位电解下自催化的电极过程的情况,其特征是电流对时间的曲线上出现极小点。 3.指出在上述两种情况下测定化学反应速度常数的方法。 4.讨论了对流及电极表面曲率的影响.

In this paper, the calculations of heat transfer for clean tube banks of boiler convective heating surfaces in crossflow are studied, First of all, the basic criterions relative to convective heat transfer calculation are briefly discussed, then the writer investigates the relationship between various physical parameters and the heat transfer in some detail for in-line tube bank and staggered tube bank. Using two kinds of famous valculation methods and relative test informations, the data treatment and the ranges...

In this paper, the calculations of heat transfer for clean tube banks of boiler convective heating surfaces in crossflow are studied, First of all, the basic criterions relative to convective heat transfer calculation are briefly discussed, then the writer investigates the relationship between various physical parameters and the heat transfer in some detail for in-line tube bank and staggered tube bank. Using two kinds of famous valculation methods and relative test informations, the data treatment and the ranges of corresponding allowable errors are analysed, the determination of variational ranges of relative criterions and corresponding exponents and proportional constants are discussed, and some recommendations referred to establishing heat transfer calculation equation for clean tube banks are provided.

本文着重研究锅炉对流受热面中清洁光管管束的放热计算。首先,简要地论述对流换热计算的基本准则方程。作者分别对错列与顺列管束,就其放热规律及放热计算中各物理参数之间的关系进行了比较详细地研究,引用国外比较成熟的两种计算方法与有关资料和数据,对数据处理及其相应的充许误差范围,做了详细地分析,对有关准则数的变化范围及相应的指数和比例系数的确定,进行讨论,并对建立清洁光管管束的放热计算式提出具体的看法与建议。

Floated gyroscopes are precission gyroscopes which are still widely used in inertial navigation systems. The torgue induced by the convective motion of the floating fluid is one of the principal sources of the drift errors. But no technical datum are available which may be used as a guide in selecting the related parameters. In this paper, the torque induced by the convective motion of the floating fluid due to temperature fluctuation and the eccentricity of the floated cylinder is evaluated.

液浮陀螺仪是目前仍在大量应用的高精度陀螺仪。浮液对流产生的力矩是引起误差的重要原因之一。为减小这一干扰力矩,需对温控精度、装配定位稳定性等提出严格要求,但至今未见能给出这方面设计依据的资料。本文研究了这一问题,给出了定量的估值,可作为设计的参考。

 
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