查询词典 implicit difference scheme

Secondly, the gun barrel temperature field is solved by two-dimensional and one-dimensional heat conduction model with finite element method and finite difference scheme respectively.

其次通过对身管二维轴对称传热模型和一维径向传热模型的数值计算，研究了身管固壁的传热问题。二维轴对称传热计算采用了有限单元法，一维径向传热计算采用了有限差分法。

Firstly , one energy conservative finite difference scheme for SRLW equation of two levels and two of three levels are proposed in this paper.

所提的格式严格保持了方程原来所具有的守恒律。

Based on the spherical harmonic functions expansion and finite difference for discretization of transport equation, an inverse power scheme is presented for calculation of the k-eigenvalue problem.

基于球谐函数展开和有限差分离散，给出了中子输运方程的源项反演逼近的反幂算法，该方法的优势是在适当的初值条件下可以显著提高计算速度。

In the first part we consider the convergence and stability of finite difference scheme for Landau-Lifshitz equation in one dimensions space and 2d radial symmetric Landau-Lifshitz equation.

在第一部分，我们研究一维Landau-Lifshitz方程非齐次边值问题和二维柱对称Landau-Lifshitz方程Neumann边值问题的有限差分格式。

This paper discusses this topic under consideration of the group structure of finite difference scheme in traditional fluid dynamics.

这种趋势的背景源于流体力学问题本身的强非线性，一般经典的数学手段难于处理，需要引入能对付大范围强非线性问题的数学手段。

Based on the general harmonic mean difference scheme, a program is coded for the flow and heat transfer in a porous media with three phases and two components. The developments of the temperature, pressure and the fluid saturation are computed.

利用文中提出的广义调和平均差分格式，建立了孔隙介质中三相两组分数值模拟程序，模拟计算了温度场、压力场和流体饱和度场的发展。

With high-density grid and high order difference scheme, such as QUICK, the computation can get better results.

对搅拌槽内计算结果的最终改善需要采用新的方法才能从根本上提高计算结果的准确性。

In chapter two,we consider a lumped mass generalized difference scheme for linear integro-differential equation in two dimensions.Lp and error estimates of the generalized Ritz-Volterra projection u ? V and and -norm error estimates of Dk = 1,2 are made,then we obtain and -norm error estimates of u?

第二章考虑二维线性积分微分方程的广义差分集中质量法，建立了广义Ritz-Volterra投影，得到u-V_h~*u的W~(1，p)和L~p(2≤p≤∞)模误差估计和D_t~k，k=1，2的V~p和W~(1，p)(2≤p≤∞)模误差估计，从而得到u-u_h的最优W~(1，p)和L~p(2≤p≤∞)模误差估计。

In chapter three,we consider first order generalized difference scheme for linear Sobolev equation in two dimensions.Lp and W1,p-norm error estimates of the Ritz-Volterra projection u-Vhu and W1,p-norm super error estimate of uh-Vhu are made,so we obtain Lp and W1,p-norm error estimatesOf u-uh.

第三章考虑二维线性Sobolev方程的一阶广义差分格式，建立 Ritz－Volterra投影模误差估计和的模超收敛估计，从而得到的最优模误差估计。

In chapter 1, a difference scheme of some two-dimensional linear pseudo-parabolic equation is concerned.

第一章中讨论了二维线性伪抛物型方程的差分格式。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。