边界单元法

As to the complexity of lake's geometry boundary, Cartesian cut cell method based on finite volume method is adopted to solve the flow field efficiently and accurately.

针对湖泊几何边界复杂的特点，为了高效并准确地计算流场，采用了基于有限体积法的笛卡尔切割单元法。

An improved contour line extraction algorithm based on grid sequence is presented in this paper.

在网格序列法的基础上提出了一种改进的轮廓线提取算法———基于区域增长的轮廓线提取算法，该算法采用区域增长的方法来加速搜索边界单元，从而避免了搜索所有的网格单元。

Then, for the first time, a finite element model of the cylindrical shell surface was bring forward and set up.

首次提出和建立了柱体坐标系下的曲面柱壳单元有限元模型，以及在柱坐标系下的边界元法基本方程和柱坐标系下无限域与半无限域基本解。

Nodal and edge elements. Galerkin's method and variational formulations. The Method of Moments.

一维、二维和三维的有限元法，节点和边界单元，Galerkin方法和变分原理。

Different kinds of integrations have to be evaluated in boundary element methods. The nearly singular integral is the most difficult one of them. A self-adaptive Gauss integral method is proposed to divide the element into finer meshes under the specified conditions.

边界元法通常需要采用数值方法解决单元内的各种积分问题，而准奇异积分是各种积分中数值处理最为困难的部分。

In this paper, based on the rational transfinite interpolation, a set of global approximation method namely rational macro-element method was proposed.

基于有理超限插值，提出了一种在求解域边界布点的全域求解数值方法－有理宏单元法。

The 3-D electric field of transformers was analyzed with the zero boundary method and infinite element method.

采用强加零边界法和无限单元法分别对高压变压器的三维电场进行了分析和计算，分析对比了两种不同方法的计算结果，并给出变压器的电位和场强分布。

The 3-D electric field of transformers was analyzed with zero boundary method and infinite element method. The results of both methods were compared with each other. The merits of these two methods were discussed and the distributions of voltage and electric field were obtained.

采用强加零边界法和无限单元法分别对高压变压器的三维电场进行了分析和计算，分析对比了两种不同方法的计算结果，并给出变压器的电位和场强分布。

In this paper, the principle and formulas to evaluate the stability of slopes with ground water are introduced,the equilibriumfunctions of element have been derived consideringthe influence of the pore pressure, and the formulas of water pressure on boundaries of element are also discussed.

摘 要：讨论了地下水作用边坡稳定性分析的运动单元法基本原理与公式，推导了有孔隙水压力影响的单元静力平衡方程和单元边界水压力的计算式。

During the calculation of the early age temperature field, the early age physical and mechanical performance of concrete varies with its age, therefore in the second chapter we discuss the early age physical and mechanical performance of concrete and its development regulation with time, we emphasize elastic module and the development about the early age strength of concrete varying with time, at the same time consider the effect of shrink and creep upon the early age of concrete, in succession discuss how to confirm the physical parameter of thermodynamics of concrete.

之后讨论了混凝土的热物理参数的确定。为了能够正确合理的应用有限元方法求解早期混凝土温度场问题，第三章论述了求解温度场的有限元方法。第三章首先对热传导的微分方程作了阐述。之后确定温度场的边界条件。本章采用变分原理推导有限单元法计算温度场的公式。因此在第二小节叙述了变分原理，然后阐明了不稳定温度场的计算的三种方法，确定第四章分析中将采用向后差分法求解0#箱梁早期的温度场。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。