The diffusion equation was discretized using a local one-dimensional finite difference equation and solved using the speedup method.
扩散方程采用隐式局部一维格式差分离散，利用追赶法求解；
The text is detailed to study the deducing process of the nodal finite difference equation, and to study its application hi the rock mass engineering problems.
本文详细研究了节点有限差分运动方程的推导过程，以及在岩土工程问题中的应用。
The paper presents an study of copper clad steel wire produced by liquid and solid bonding method. Using the finite difference equation, the dipping process is analyzed.
以液固相反向凝固法生产的包铜钢线为研究对象，利用有限差分法分析了铜在钢线芯体上的浸覆过程；
But this partial differential equation can not be directly integral, so usually use Navier method, Rayleigh Ritz method and finite difference method and other methods.
但这一偏微分方程不能直接积分，所以通常用纳维法、瑞利-里兹法、有限差分方法等方法求解。
We use finite difference method to solve electromagnetic wave equation.
采用有限差分方法，对波动方程求数值解。
The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method.
时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组，实现对室内声场中低频段的模拟计算。
At the same time, based on the result, it is concluded that the upwind finite difference scheme for solving the one dimensional heat transfer equation for SG is stable.
同时，根据这个结果分析得到了求解蒸汽发生器一维传热方程的逆风有限差分格式是稳定的。
In numerical wave simulation of finite difference for acoustic wave equation, due to the limitation of computer model, there inevitably exists strong artificial boundary reflection.
在声波波动方程有限差分波场数值模拟中，由于计算模型的限制，导致很强的人为边界反射的产生。
By deriving balanced differential equation of buried pipeline, adopt finite difference method to analyze and calculate the effect of axial build-in force on pipeline transversely displacement.
推导出埋地管道的平衡微分方程，采用有限差分法分析并计算了轴向嵌固力对管道横向位移的影响。
A new technique is given here, which combines partial algorithm with scanning algorithm and obtains wave arrival times by solving eikonal equation with the use of finite difference method.
本文提出一种将局部算法与扫描算法相结合的、用有限差分解程函方程求取地震波初至时间的方法。
Using the finite difference method, the state equation of the transverse vibration of an axially moving rectangular membrane is derived.
利用有限差分法，导出了轴向运动矩形薄膜横向振动控制系统的状态方程。
In this paper, a finite difference domain decomposition algorithm on an unstructured triangular mesh for numerically solving the two-dimensional heat equation is studied.
本文讨论了一类在无结构三角网上数值求解二维热传导方程的有限差分区域分解算法。
The finite difference methods based on acoustic or elastic wave equation are very useful tools for wave-field numerical modeling or VSP data synthesizing.
基于声波或弹性波方程的有限差分方法是数值模拟地震波场或合成VSP地震记录的有力工具。
It is briefly introduced that three-dimensional finite difference numerical equation is built according to Darcy's law and water equilibrium principle.
又简介根据达西定律和水均衡原理，建立了三维有限差分数值方程及其解法。
More practical ray tracing methods currently include the wavefront method, the shortest path method, the travel time epenthesis method, the eikonal equation finite difference method, etc.
当前实用性较强的射线追踪方法，包括波前法，最短路径法，走时插值法，程函方程有限差分法等。
A finite difference method was derived for the analysis of time domain electric field integral equation (TDEFIE) of thin wire structures.
提出一种求解基于细线结构的时域电场积分方程(TDEFIE)的方法-有限差分方法。
The pseudo-spectrum method uses Fourier transform and finite difference to solve wave equation. It is one of the important methods used to simulate the seismic wave field.
伪谱法利用傅立叶变换和有限差分求解波动方程，是三维波场正演模拟的重要方法之一。
The time difference equation derived from unsaturated flow equation can be approximated by Galerkin finite element or finite difference method for space coordinate derivatives.
所得的非饱和土壤水运动方程对时间的差分方程，在空间上不仅可用有限元法而且可用有限差分法处理。
Compared with Finite Element Method and Finite Difference Method, Boundary Integral Equation Method is computationally more efficient.
与有限元法和有限差分法相比，该方法具有更高的计算效率。
Simple examples for explaining the unifying realization methods of state space and difference equation model using finite markov parameters are also presented in this paper.
并以简例说明了用有限的马尔可夫参数实现状态模型和差分模型的统一方法。
A novel numerical algorithm SSFD (split-step finite difference) has been presented for solving nonlinear pulse propagation equation.
提出了一种新型的分步有限差分(SSFD)算法来求解非线性锁模脉冲传输方程。
The finite difference depth migration equation in space-frequency domain can be derived when the radical expression is approximated by continued fraction.
采用连分式近似，可以得到空间频率域的有限差分深度偏移方程。
The pressure equation is solved by mixed finite element method, while the concentration equation is solved by finite difference-streamline diffusion finite element method, that is, using SD f.
提出了解不可压缩两相混溶驱动问题的一种新的数值方法，压力方程用混合有限元求解，浓度方程用差分流线扩散方法求解。
For the pit (well) -ground special circumstances, Using the finite difference and integral equation method forward modeling Observation data.
对于坑(井)—地的特殊情况，利用有限差分和积分方程法进行了正演模拟计算，获得了数据。
In solving partial differential equation (i. e. pricing model), the author adopted the finite difference method to get its numerical solution.
本文采用有限差分法求解偏微分方程(即定价模型)的数值解。
V. equation. A mixing leap-frog and C-N finite difference scheme is proposed.
方程周期初值问题构造了其C-N，“蛙跳”混合差分格式。
At present, the common numerical methods are finite difference, finite element, boundary element, integration equation and transmission line method.
目前，解决这类问题的数值方法主要有有限差分法、有限元法、边界元法、积分方程法、传输线法等。
By using finite difference method, the derived equation was solved coupling with energy conservation equations.
利用有限差分法将该方程与能量守恒方程进行了耦合求解。
Highly precise solutions both in time and in space can be reached by solving wave equation with high order finite difference scheme of staggered grid under the condition of stability.
用交错网格的高阶有限差分方法解波动方程，在满足稳定性要求时，可获得时间和空间都是高阶精度的结果。
Highly precise solutions both in time and in space can be reached by solving wave equation with high order finite difference scheme of staggered grid under the condition of stability.
用交错网格的高阶有限差分方法解波动方程，在满足稳定性要求时，可获得时间和空间都是高阶精度的结果。
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