查询词典 second boundary condition

Based on second-order Laplace equation and boundary condition, obtains the integral equation after Green transformation.

基于二维Laplace方程和边界条件，经过Green转换得到以势函数及势函数法向导数为未知量的积分方程。

Second, thestress-type ABC indicates that the ABC is an expression of interaction stress betweenthe near-field finite domain and the far-field infinite domain. It can compatible withthe finite element method very well as a natural stress boundary condition, leading tothe numerically stable near-field wave motion method.

其次，应力型指人工边界条件是有限域和无限域间相互作用应力的表达式，其作为自然边界条件较好地兼容有限元法，易于形成稳定的近场波动分析方法。

Secondly, A new heat and moisture model between skin surface and clothes and environment is introduced here, which considers all of the heat and moisture exchange to be Neumann (or second-type) boundary condition. Great benefits will be available for the various requirement of the clothing model.

更多其次，针对目前热调节模型的复杂性带来的改变服装形式和改进服装模型的困难较大的问题，本课题提出将环境对人体的所有热湿影响抽象为皮肤表面的第二类换热现象的新方法，提高了模型的灵活性并且扩展了其使用范围。

Therefore,it is necessary to research diffusion equation for suspended sediment because it describes the sediment move process in the water body.The equation is a various coefficients second-order linear partial differential equa-tion,such equation under complex boundary condition is very difficult to get its analytical solution,while its numerical solution relative analytical solution is more easier and has the obvious superiority:simple,the computation convenience.but to get a kind of difference format which is good accuracy and stability is not easy.

泥沙扩散方程实际上是一个变系数的二阶线性偏微分方程，这样的方程在各种复杂边界条件下求解是十分困难的，求它的解析解在数学上存在着难以克服的障碍，无法求出其精确解，因此常用数值方法求它的近似解，相比较而言，数值方法有着明显的优势：即简单灵活、计算方便快捷，但要寻找一种精度高、稳定性好、计算方便的差分格式也并非易事。

Numerical results for perfectly conduction and homogeneous penetrable circular cylinder are presented and compared with the solutions by using second-order differential operator B2 type absorbing boundary condition.

本文使用这种边界条件对理想导电及均匀电磁可穿透材料圆柱散射体的表面场进行了数值计算，并与使用二阶微分算子B_2型的吸收边界条件的结果作了比较。

In this paper a two-dimensional model has been established for the second class boundary condition to investigate the heat and mass transfer process inside the zeolite-water adsorption bed.

建立了沸石-水吸附式制冷系统吸附床在非第一类边界条件时的二维传热传质模型。

To investigate the heat and mass transfer process inside the zeolite water adsorption bed, a two dimensional model has been established for the second class boundary condition.

建立了沸石—水吸附式制冷系统吸附床在非第1类边界条件时的二维传热传质模型。

Comparing with the second order Bayliss Turkel radiation boundary condition in the same calculation conditions, it shows that the results using MEI ABC are better than those using Bayliss Turkel RBC.

实际上 ，就是在不存在散射体的"空"区域中设置计算单元网格，而这个"空"区域的大小势必对计算效率具有直接影响。

This paper proposes a network parallel computing approach for hydromechanical problem on rectangle domain using line-relaxation method.A multigrid method with virtual nodes for the second kind boundary condition and a parallel scheme of zebra-line-relaxation multigrid technique are discussed.

提出了一个用线松弛法解决长矩形区域流场问题的网络并行方案，详细讨论了使用虚拟节点处理第2类边值条件的多重网格技术和斑马线松弛多重网格技术的并行化方法，给出了从计算方法到它的并行化的完整过程。

A numerical model was established by combining the seven-flux model of light propagation with the two-dimensional hyperbolic heat conduction model in cylindrical coordinates. It showed that there exists a great discrepancy between the results obtained by treating the laser irradiation as volumetric absorption (i.e. taking laser scattering and absorption into consideration) and those obtained by treating the laser irradiation as the second boundary condition.

将激光传输的七流模型与圆柱坐标系内的二维双曲型导热模型相结合建立了理论模型；将激光照射处理为容积吸收(即考虑激光在生物组织中的散射和吸收)所得到的计算结果，与将激光照射处理为第二类传热边界条件所得到的计算结果相比，两者差别很大；考察了激光照射下散射系数和吸收系数对生物组织内双曲型导热的影响。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。