The governing equations represented by the general convection diffusion forms are discretized using the finite control volume method.
控制方程采用通用的对流扩散方程并利用有限控制容积法离散。
Initial value as a problem of convection diffusion equation can be solved by applying fine integral of single inner point subdomains.
可用单内点子域精细积分，求解对流-扩散方程初值问题。
Linear modified characteristic finite difference and alternating direction schemes are devised for nonlinear convection diffusion problems.
给出了解非线性对流扩散方程的线性修正的特征差分格式及交替方向格式。
Using alternating segment explicit implicit method for the variable coefficient convection diffusion equation. The method has the obvious property of parallelism and is unconditionally stable.
应用交替分段显隐方法求解变系数对流扩散方程，此方法具有很好的并行性且无条件稳定。
Large temperature and concentration differences taking place in CVD process lead to natural convection and concentration diffusion which interact with forced convection and complex reactor geometries.
在CVD过程中，存在着大的温度差和浓度差，将引发自然对流和浓度扩散，它们又与气体的强迫流动以及反应器的几何尺寸和形状相互影响。
Computer calculations have been made on the dimensional solution to the anisotropic diffusion convection equation for solar cosmic rays propagating in an uniform and unbounded interplanetary medium.
应用电子计算机计算了太阳宇宙线在均匀并无限的行星际介质中传播的各向异性扩散对流方程的量纲分析解。
This method is an analytic scheme of fractional steps for convection operator and for diffusion operator respectively.
其主要特点是：采用分步方法，对对流算子与扩散算子分别解析求解。
The concept of heat decomposition was put forward. Heat to the external cooler consists of both convection heat and equivalent "diffusion heat".
提出了热量分解概念，外取热器热量由对流热和当量“扩散热”两部分组成。
The experiment quantitatively verifies the existence of convection flows of gas induced by the gradient magnetic field, furthermore the convection flow promotes the combustion in diffusion flames.
实验定量地验证了梯度磁场可以诱导气体对流的发生，从而进一步推进扩散火焰燃烧反应。
The present paper studied the global existence of nonnegative solutions of one-dimensional Newtonian filtration equation with more general boundary fluxes term, reaction, diffusion and convection.
讨论具有一般形式的对流项、扩散项、边界流项以及反应项的一维牛顿渗流方程初边值问题非负解的整体存在性。
Not only convection but also random diffusion of substantial particle and their sediment are considered in the model.
该模型不仅考虑了质点在海水中的对流运动，而且还用大量质点的随机扩散模拟湍扩散过程。
Physical processes of the propagation of the solar cosmic rays in the interplanetary space include the diffusion in interplanetary disordered magnetic fields and the convection in solar winds.
太阳宇宙线在行星际空间的传播，包括行星际不规则磁场中的扩散和太阳风对流这两种物理过程。
These factors include magma composition, convection, diffusion, thermal gradient, oxygen fugacity, temperature, pressure, the shape of magma chamber etc.
影响韵律形成的因素很多，通常包括岩浆成分、对流作用、扩散作用、热梯度、氧逸度、温度和压力等。
It uses the method of nonequilibrium dynamics to study the stability of stellar nuclear reaction area considering the effect of diffusion, convection and gravitation.
采用非平衡过程动力学理论，考虑核反应区对流、扩散及引力的影响。
This class of nonlinear diffusion equation with convection term resemble to the celebrated equation arising in statistical mechanics and have important physical sense.
这类具有对流项的非线性扩散方程，类似于著名的统计力学方程，具有重要的物理意义。
Discusses some properties of the second upwind difference scheme for the convection-diffusion equation and explains certain questions in the computation of natural convection problems.
讨论了对流扩散方程的第二逆风差分格式的一些性质，并说明了在自然对流计算中的某些问题。
The particle transport consists of outward diffusion and inward convection.
粒子输运由向外扩散和向内对流构成。
In this paper, finite bulk-finite element means is presented for solving convection-diffusion problem, moreover give out the stability analysis.
将有限体积和有限元方法相结合，解决对流扩散方程问题，并给出了稳定性分析。
Fractional nonlinear convection-diffusion equation with external forces is given.
建立了含有外力的分数阶非线性对流-扩散方程。
The convection-diffusion of substances in subsurface waters is the theoretical basis for hydrochemical exploration of oils.
地下水中物质的对流-扩散是水化学找油的理论基础。
The coefficients in the equilibrium distribution are determined by the convection coefficient and the diffusion coefficient.
由对流扩散方程的对流系数和扩散系数确定了局域平衡分布函数的系数。
Axisymmetric steady flow, assume the axial diffusion is negligible compared with the radial diffusion, axial convection and the radial convection.
轴对称稳态流，假设轴向扩散相比径向扩散、轴向对流和径向对流是可忽略的。
To eliminate the difficulty in dealing with convection terms, an exponential transformation function is introduced to turn the CDE into their equivalent diffusion-reaction equations (DRE).
引入指数函数，将对流扩散方程变换为扩散反应方程，消除了数值求解中较难处理的对流项。
Acid flow and reaction in a wormhole was studied by modeling the wormhole as a cylinder and numerically solving the mass balance equation that describes acid transport by convection and diffusion.
将酸蚀蚓孔简化为单圆管模型，酸液流动反应物质平衡方程反应传质和扩散作用。
The alternative direction illegible method is used in solving two-dimensional convection-diffusion equation for natural convection in cavity, and the convergence is improved.
本文针对二维自然对流换热的控制方程的数值求解，利用交替方向隐式格式，改善数值方法的收敛性。
A new stabilized finite element method by also presented use of residual-free bubbles for the parabolic convection-dominated diffusion problems, and proved the convergence.
文中利用泡函数构造数值，求解抛物型强对流扩散问题的稳定化方法，并给出收敛性分析。
For the nonlinear convection-dominated diffusion equation, this method can not only stabilize the numerical oscillation but also accelerate the convergence and improve the computational efficiency.
对于非线性对流占优扩散方程，不仅可以消除因对流占优项引起的数值振荡现象，还可以加快收敛速度、提高计算效率。
This article studied the convection and diffusion of polluted materials in soil using convection and diffusion equation considering the effect of percolation.
采用对流扩散方程并且考虑渗流作用的影响，研究了缓流水体底泥污染物对周围土层的影响。
The results showed that the intensity distribution had relation with the velocity of percolation, time, coefficient of convection and diffusion.
发现污染物在土壤中的质量浓度分布与渗流速度、作用时间、扩散系数等有关。
Based on the Finite Volume Methods (FVM), model system is developed to solve the 2d shallow water equation and convection-diffusion equation.
以有限体积法为核心，建立了求解二维浅水方程和对流扩散方程的模型体系。
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