用三维控制容积法推导了传热、导电的有限差分方程。
The finite difference equations was deduced using three dimensional control volume method.
根据热力学基本原理，方便地确定出三维传热有限差分方程稳定性判据。此稳定性判据可用于求解具体的传热问题。
In accordance with the basic thermodynamic principles, the authors arrive at easily the stability criteria of difference equation in 3d heat transfer.
结果表明，对于部分有限差分方程，在用启示性方法分析其计算稳定性的过程中最好采用从差分方程推导来的展开式以期得到较合理的结果。
It shows that for some difference equations, we'd better adopt the expansion equations in the process of the heuristic method being applied to these difference equations.
采用有限差分方法，对波动方程求数值解。
We use finite difference method to solve electromagnetic wave equation.
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。
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.
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。
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.
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。
The finite difference methods based on acoustic or elastic wave equation are very useful tools for wave-field numerical modeling or VSP data synthesizing.
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 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.
利用时间域有限差分(FDTD)法将麦克斯韦方程进行离散化，可以对地质雷达进行数值模拟。
Maxwell's equations can be discretized by finite difference time domain (FDTD) to simulate ground penetrating radar (GPR).
跨音速计算采用守恒型金位势方程，精确边界条件和AF 2高效有限差分迭代算法。
The transonic flow computation is performed by the use of conservative full-potential equation with exact boundary conditions and the efficient iteration scheme in finite difference method AF2.
建立了含有微气泡的平板边界层方程，并采用一种简单的混合长度模型和有限差分方法对该方程进行了数值计算。
The equations of the boundary layer containing microbubbles on the plate are established, then calculated employing a simple mixing length model and a finite difference method.
采用双参数地基模型来改进温克尔地基模型，并用有限差分的方法求解任意荷载下条基的微分方程，得到便于工程计算的线性方程组。
Take double parameters foundation model to improve Winkler model, and use finite difference method to resolve linear basis under columns and get linear equations which could be easily used in works.
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.
时域有限差分(FD - TD)法是麦氏方程的差分形式的数值解法，用于求解任意复杂目标与电磁场的相互作用问题。
FD-TD is a numerical method to seek the solution of-Maxwell equation in time domain, which can be used to analyze the interactions between electromagnetic field and complicated objects.
建立了考虑列车管泄漏的连续性方程，给出一种求解压力速度耦合方程的显式有限差分算法。
We have established the continuity equations under train pipe leakage condition and presented an explicit finite difference method to solve the pressure-velocity coupling equations.
根据喉部沉积的传热模型建立了偏微分方程组，采用有限差分完全隐式格式进行数值分析计算。
On this heat transfer model the differential equations were based, and the finite difference complete concealed grids were used in the numerical analysis computation.
由此提出了扩展边界节点的概念，并使用有限差分法，对所得到的差分方程组进行了计算机求解及模拟。
The concept of extended boundary node was presented. By using finite difference method, the solution of the gained difference equations was given and simulated by computer.
其中连续动力学由微分或者差分方程描述，离散动力学由有限的自动开关描述，并由异步的离散事件驱动。
The continuous dynamics is governed by differential or difference equations, whereas the discrete dynamics is governed by finite automata that are driven asynchronously by external discrete events.
在透声界面附近运用声学基本方程可导出边界条件的时域有限差分(FDTD)表达式。
From the basic equations in acoustics, boundary condition expressions on penetrable interfaces between media can be derived for the finite difference time domain (FDTD) method.
分析误差传递因子相角等因素对有限差分波动方程偏移造成的相位畸变问题，找到相应规律。
Cut-error that made from the finite difference mirgation, phase angle of error transfer function and factors that determine their values are discussed.
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。
A finite difference method was derived for the analysis of time domain electric field integral equation (TDEFIE) of thin wire structures.
采用二分步法，从积分型方程出发，在有限控制体上建立守恒型差分格式，对二维浅水波方程进行求解。
By use of the time split method, a conservation difference formula is established to find the solution to the shallow water equation based on the finite volume control method from integral equations.
采用时间和空间均为二阶精确的有限差分方法，将偏微分方程进行差分化。这样，空间的电磁场可由时间域有限差分法（FDTD）来求解。
The TM set of equations can be solved using a finite difference time domain (FDTD) approximation that is second-order accurate in both space and time.
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。
The time difference equation derived from unsaturated flow equation can be approximated by Galerkin finite element or finite difference method for space coordinate derivatives.
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。
A novel numerical algorithm SSFD (split-step finite difference) has been presented for solving nonlinear pulse propagation equation.
利用有限差分技术对通用方程进行离散化，同时采用贴体坐标较好地解决边界不规则的问题。
The problem of boundary irregularity is solved by using finite differential technology and body fitted coordinates.
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 finite difference depth migration equation in space-frequency domain can be derived when the radical expression is approximated by continued fraction.
该模型的数学形式是一个非线性二阶常微分方程，利用有限差分方法进行求解。
The mathematical expression of this model is a second order non linear ordinary difference equation.
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。
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。
For the pit (well) -ground special circumstances, Using the finite difference and integral equation method forward modeling Observation data.
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