数值方法

Considering of helical gear separate mesh and tooth-back shock, the non-linear vibration equitions of the system are also established, and the non-linear stable cycle solutions of the equitions are evaluated through dividing the timechanging stiffness matrics and dimension the equitions with selfadapt vary-step auto-RK4 numerical method.

考虑了斜齿轮传动的轮齿脱啮和齿后侧冲击，建立了系统的非线性振动方程，并通过对方程时变刚度阵的分块处理及无量刚化，用自适应变步长auto-RK4数值方法求出了系统非线性振动方程的稳态周期解。

In this thesis, we carried out a detailed numerical modelings on the transport process of a planetary reactor with three-separate inlets designed by ISCAS with the help of FLUENT code. We also explore the possibility to optimize the transport process as well as the reactor.

本文所研究的内容，就是利用计算机二维数值方法，采用FLUENT软件，对中科院半导体所自行设计的垂直三重进口行星式MOCVD反应器的输运过程及其与外部参数的关系进行模拟研究，并提出反应器的优化方案。

The propagation property of an ultrashort pulse in multi-level quantum system has been investigated with numerical method.

本文运用数值方法研究了超短激光脉冲在多能级系统中的传输特性。

By careful study to the deflection response of a hinged-fixed circular plate u nder concentrated impulse loading,the saturated impulse phenomenon in the proces s of response is discussed.

利用有限变形弹塑性连续体的最小加速度原理，建立了分析圆板动力响应问题的数值方法，并通过对均匀分布的脉冲载荷作用下铰支圆板位移响应的细致分析，探讨了响应过程中的饱和冲量现象，指出对于高载范围内的脉冲载荷，相应于最大变形的饱和冲量确实是存在的。

The results show that the wind loads on the roof structure are mainly suctions. and the wind loads on the windward and leeward of the roof structure near the ground are positive. The differences among the results of four turbulence models were not notable.

结果表明，此类大跨度椭球屋面风压分布主要以吸力为主，靠近地面的屋面迎风面和背风面风压为正压。4种湍流模型的模拟结果之间差异较小，数值方法能够较准确地模拟该类大跨度椭球屋面的风压分布。

First, we introduce the linearly distributed stress tensors as the source and by means of two-dimensional finite-difference scheme to obtain the response of this source, then the point source response is generated by correcting both the wave forms and geometrical spreadings for the linear respons.

但在理论地震学，工程地震学和勘探地震学中横向不均匀介质中的波传播问题非常重要，此时使用有限差分法和有限元法等离散数值方法比较有效。鉴于目前计算工具的限制，三维模型的有限差分计算虽然在理论上是可行的，但很少能用于实际。

The study investigates thermal performance of vapor chamber heat spreaders by numerical method.

中文摘要本研究旨在利用数值方法分析蒸汽腔体的温度梯度。

In the present study the convergent problems for the spheroids are investigated. The results show that our numerical method and the computer codes for the T-matrix approach are efficient.

我们研究了椭球粒子的收敛问题，结果表明我们的数值方法和T-矩阵计算程序是有效的。

In the Method of Fundamental Solutions, seeding location of the source points on a fictitious boundary off-setting from the real boundary is necessary.

在基本解法数值方法中，为避开奇异性将源点布在离开边界的虚拟边界上是必要的。

The experimental results agree well with that of the theoretical analysis. The results also show that during the liquid injection, a hollow swirling jet is formed in the shape of an olive with a thin shell.

应用质量守恒定律和动量守恒定律，本文首创性的建立了用于描述旋流喷嘴射流初始阶段所形成的空心旋转射流的运动的理论模型，并采用数值方法进行求解。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。