超松弛

The comparision between adaptive multiple grid method and successive overrelaxation method［J］.

欧阳洁。自适应多重网格法与超松弛法的比较［J］。

As to externally pressurized bearing this paper successfully developed model with finite element formulations to realize numerical calculation by means of overrelaxation and scale division methods of nonlinear equation.

离散后得到的非线性方程组采用了超松弛迭代法和比例分割法进行求解。

The elliptic electric potential equation is solved by Gauss-seidel iteration using a successive overrelaxation technique.

椭圆型电场方程采用控制容积积分方法离散，用Gauss-seidel迭代加超松弛方法求解。

Overrelaxation c language source code useful.

超松弛法c语言源程序代码，很有用。

Edge Based Finite Element Method is combined with overlapping or nonoverlapping overrelaxation Domain Decomposition Method and Boundary Integral Equation for analyzing the electromagnetic scattering of electrically large open-ended cavities.

摘要该文将超松弛重叠及非重叠区域分裂法与矢量有限元方法、边界积分方程法相结合对三维电大尺寸开口腔体的电磁散射特性进行分析。

D resistivity forward modeling ; Finite-element ; Secondary potential ; Symmetric successive overrelaxation ; Conjugate gradient.

电阻率三维正演；有限元；异常电位；对称超松弛；共轭梯度

Firstly, the three-dimension boundary question and its corresponding variation question concerning the point-source electrical field on a 3-D structure are presented. Secondly, the finite element method is used to solve the variational equation. The study area is divided into many tetrahedral elements. Then, we interpolate with a tri-linear function in each element. So, the variational equation is converted into a linear equation system. Finally, taking into account saving of time, we make use of symmetric successive overrelaxation preconditioned conjugate gradient algorithm to solve large linear system, and obtain the potential value of each node, resulting in the calculation of the apparent resistivity values on the ground surface.

首先给出了三维构造中点源电场的边值问题以及相应的变分问题；然后利用有限单元法求解变分问题，采用四面体单元对研究区域进行剖分，在单元中进行三线性函数插值，将变分方程化为线性代数方程组；最后，考虑到节约计算时间，利用对称超松弛预条件共轭梯度迭代算法求解大型线性方程组，得到了各节点的电位值，进而计算出地表的视电阻率。

In this study, symmetric successive overrelaxation preconditioned conjugate gradient algorithm is used to solve large linear system derived from 3-D finite-element resistivity forward modeling. Using row-indexed sparse storage mode to store coefficient matrix, the algorithm converges much quickly and requires much less storage of computer.

引入对称超松弛预条件共轭梯度迭代算法求解电阻率三维有限元计算形成的大型线性方程组，并有机结合系数矩阵的稀疏存储模式，使得三维有限元正演计算的速度大大提高而内存需求则大大减少。

The viscous fingering in self-affine Sierpinski carpet, based on the assumption that bond radii are truncated Rayleigh distribution, is simulated by means of successive over-relaxation techniques.

在自仿射Sierpinski地毯中，认为喉管半径服从截断瑞利分布，采用逐次超松弛技术，模拟了自仿射Sierpinski地毯中的粘滞指进。

Secondly, we discuss the semiconvergence of the block AOR method for solving singular linear systems with p-cyclic matrices.

其次，我们研究了求解系数矩阵为奇异p-循环矩阵的线性方程组的块加速超松弛迭代法的半收敛性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。