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- It can be implemented by simple finite difference scheme with a significantly larger time step. 模型允许选取较大的时间步长，可以用简单的有限差分格式实现。
- A clase of leap-frog finite difference scheme with higher stability propertiesfor a hyperbolic equation Ut+aUx=0 are proposed in this paper. 本文提出了一种数值求解双曲方程Ut+aUx=0的高稳定性蛙跳显格式。
- In order to capture the shock wave, Murman Cole type of finite difference scheme is used to calculate spatial source distribution. 用 Murman- Cole差分格式计算空间场源强度 ,以捕捉激波。
- The energy equations of the oil film and the bush are solved simultaneously by using an efficient finite difference scheme. 用一有效的有限差分法同时求解油膜和轴瓦的温度控制方程。
- A finite difference scheme based on semi-vectorial wave equations is used to study the dispersion properties of photonic crystal fibers (PCF). 采用基于半矢量波动方程的有限差分法研究了光子晶体光纤(PCF)的色散特性。
- Key words Partial integro-differential equation fractional calculus nvolution quadrature finite difference scheme second order fully discrete scheme. 本刊中 包含“偏积分微分方程;分数次计算;卷积积分;差分格式;二阶全离散.
- Compact finite difference scheme (CFDS) on non-uniform meshes and their truncation errors are constructed by matching the Taylor series coefficient expansion. 摘要采用泰勒展式系数匹配的方法构造基于非等距网格的紧致差分格式并得出了它的截断误差。
- Compact finite difference scheme(CFDS)on non-uniform meshes and their truncation errors are constructed by matching the Taylor series coefficient expansion. 采用泰勒展式系数匹配的方法构造基于非等距网格的紧致差分格式并得出了它的截断误差。
- In this paper,the discrete solution are generated by an upwind finite difference scheme and the grid is formed by equidistributing a monitor function based on arc-length. 用等分弧长函数来控制网格剖分,用迎风有限差分格式来求解一类奇异摄动两点边值问题的自适应算法。
- Using the large eddy simulation (LES) and finite difference scheme, three-dimension simulation of the velocity field around a square cylinder at a Reynolds number of 22,000 is conducted. 采用有限差分法;对雷诺数为2.;2×10~4的方柱绕流进行了大涡模拟(简称LES)。
- Compressible turbulent channel flows at two Mach numbers(M=0.8 and 1.3 ) are simulated by the numerical integration of the Navier-Stokes equations with a high-order compact finite difference scheme. 使用高精度的有限差分格式直接数值模拟了Mach数等于0.;8和1
- In this paper,a optimal finite difference scheme based on the optimal FIR method is discussed,with which the ideal differential operator is approximated in the frequency or spetial domain. 文中讨论了一种基于最优有限冲激滤波器设计方法的最优差分格式,从频率空间或者波数空间中实现对理想偏微分算子的逼近,构造一种新的具有低数值色散关系的最优时域有限差分方法。
- Based on vectorial seismic theor y, a high-order finite difference scheme fo r 2D isotropic media is derived in the paper which can achieve reverse-time extrapolat ion of elastic waves. 从矢量波动理论出发,导出了二维弹性波逆时传播的高阶差分格式,实现了弹性波在数值空间中的逆时延拓。
- The time derivatives are handled by a time-space domain concept, which completely avoids the requirement of Laplace transformation or the finite difference scheme to discretize the time derivatives. 仅有唯一受制边界条件，基本解法无受限于计算域形式，可成功求解半无穷域和外域问题。
- The numerical investigation into the instability of the under-expanded supersonic jets is presented in this paper by solving the axisymmetric N-S equations with the NND finite difference scheme. 摘要 应用NND有限差分格式求解轴对称可压缩N-S方程，研究了不同驻室与 环境压力比条件下欠膨胀超声速射流近场的失稳特性.;计算结果表明欠膨胀超声速射流的失 稳机制根据射流激波结构的特征可分为3种失稳模式：具有规则反射激波结构和单一剪切层 特征的射流不稳定性；
- Then the new function space is introduced and the stability problem for the finite difference scheme is discussed by means of variational approximation method in this function space. 然后引入新的函数空间，并在这个空间上，采用变分近似法讨论了该格式的稳定性问题。
- Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh. 相场方法不需要跟踪固液界面，因此在模拟枝晶生长方面有独特的优势。
- five point finite difference scheme 五点有限差分格式
- nine point finite difference scheme 九点有限差分格式
- high order finite difference scheme 高阶差分格式
