查询词典 boundary layer

Based on the perfectly matched layer absorbing boundary condition, a new form of PML absorbing boundary condition in cylindrical coordinate suitable for optical fiber is derived.

在已有的完全匹配层吸收边界条件的基础上推导了圆柱坐标系下适用于光纤计算的PML吸收边界条件。

In 1970s, boundary value problems with equivalued surface are put forward. Andit is important to study them to solve practical problems. Li Ta-tsien and his partnersdo systematic research on them, especially study certain kind of elliptic boundary valueproblem with equivalued surface on the domain with thin layer.

二十世纪七十年代提出了一类等值面边值问题，它对于解决实际问题起到了非常重要的作用，李大潜等人对其进行了比较系统的研究，特别的对在具有薄层的区域上的椭圆型等值面边值问题进行了探讨。

The improved e-N method can also yield results well agree with those obtained by DNS.4 The transition prediction for boundary layers on cones with different key parameters such as angle of attack, cone half angle and the Mach number of the coming flow, have been made, to show the reliability of the modified e-N method.5 For the calculation of base flow, boundary layer equations can be used in the case of small angle of attack.

但是它要依赖于对初始扰动的正确预估，这显然又取决于更多飞行数据的积累和分析。e-N方法的转捩预测结果与直接数值模拟得到的结果也吻合较好。4通过对不同来流攻角、不同半锥角和不同马赫数的三维圆锥边界层的转捩位置进行预测，证实了改进的e-N方法对于三维边界层转捩预测是可靠的。5对于基本流的计算，边界层方程可以用于小攻角的情况，其计算量远远小于直接数值模拟，但背风面的剖面不可靠。

Zhu Jialin[23]used a simple layer distribution expression based on velocity-pressure formula for the Dirichlet problem of Stokes equation with a Galerkin boundary element method and presented some numerical examples calculated by constant boundary element.

祝家麟从速度-压力公式出发，利用单层位势表示定常Stokes 方程Dirichlet 问题的解，用Galerkin 边界元法求解，并用常单元给出数值算例。

The outer boundary of an object or a material layer constituting or resembling such a boundary .

一个物体的外在的轮廓或是事物表面的那一层。

As the tetrahedral grids exist in the majority area, the pentahedral prism grids are adopted near the boundary, which meets the SST model's requirement of mesh in the boundary layer. Pressure recovery factors under different number of grids are calculated so as to decrease the error from coarse mesh, then the suitable number of grids is obtained.

流场大部分区域为四面体网格，在边界附近采用加密的五面体棱柱型网格，满足了SST模型对边界层网格的要求；为了减少网格过粗引起的汁算误差，还通过计算不同网格数下尾水管的压力恢复系数来优选出合适的网格数目。

The full field boundary element solutions are solved for the small—scall yielding problem of boundary layer formulation.

针对双材料界面裂纹边界层构形计算了小范围屈服问题的全场解，并与现有理论和有限元结果进行了比较。

Heat conduction equation ; Galerkin boundary element method ; Indirect boundary integral equation ; Simple layer potential2000 MSC:35F99; 35K05; 80M15

热传导方程； Galerkin边界元法；间接边界积分方程；单层位势

A boundary layer numerical solution was used for the computation of combustion in hybrid rocket motor according to the boundary burning theory.

引 言混合推进[1]的概念自从20世纪30年代提出之后，混合火箭发动机的燃烧问题就始终占据着重要的地位[2]。

The measurements in the ship tank and the wind tunnel show that there are no obvious differences between the mean profiles of turbulent boundary layers at the rigid wall and the compliant wall, but the turbulence intensity of the turbulent boundary layer near the compliant wall is higher than that near the rigid wall.

中文摘要：船池和风洞的热线热膜测量表明，刚性表面和柔性表面湍流边界层的平均速度型无明显差异，但柔性壁面的湍流边界层的壁面附近有较高的湍流强度；两者的相干结构有明显的不同特征。

These are places without aristocratic baggage; egalitarian places open to talent, self-improving, engaged in learning and innovation through networks that were at once competitive and cooperative.

这些地方没有贵族遗风作祟，而且对于那些有天分的人是开放的平等之地，这些人善于通过那些曾经很具有竞争力与合作精神的关系网进行自我提高以及学习创新。

Christine: You don't want to see me?

你不想见我？