模拟实验

In order to check the correctness and reliability of direct numerical simulation of the three-dimensional turbulence with the moderate or low flow Reynolds number, this paper adopts the pseudospectral method to direct numerically simulate the three-dimensional plane mixing layer.

为了验证直接数值模拟三维中低流动雷诺数湍流的正确性和可靠性，该文采用拟谱方法对三维平面混合层流场进行了直接数值模拟，并将数值模拟得到的结果与 Lasheras 等的平面混合层经典实验结果进行了对比。

We also using numerical simulations to exam the optical properties of the diffractive structures, and theorically explain how the diffractive can work as a PBS, and also anchoring LC molecules.

在模拟方面，本论文利用三种不同的数值方法(FEM、FDTD、RCWA)进行光学模拟，并与实验进行对照比较，除此之外也将数值模拟视为是设计与改良绕射结构的重要工具。

The field survey, sampling, testing and collection of the geological and hydrogeological data were done for the description of evolutional geological structure and sedimentation and division and definition of water-bearing system and hydrogeological age and hydro-pressure system and study of the vadose field and chemical field. By establishing the rammer numerical model, the sandy mudstone thickness recovery model, water-rock interaction particle translative simulation and hydrogeochemical simulation, and using geological statistics, analogism and complex analysis method, water circulation and water exchange of each layer in each study stage have been researched, The results show the regularity of the vadose field evolution in different stages.

本项以野外调查、采样测试和搜集的地质、水文地质大量第一性资料为依据，在论述盆地的地质构造演化、沉积演化的基础上，以含水系统、水文地质期和水压系统类型的划分和定位为研究的切入点，渗流场、化学场为研究主线，通过建立压实数学模型、砂泥岩恢复厚度数学模型、水岩作用物质成分转移的实验模拟、水文地球化学模拟、地质统计法、类比法、综合分析法等方法，模拟计算了各研究层在各研究时期水循环特点和水交替强度，揭示了各研究层渗流场在地史进程中形成演化的规律性。

The temperature fields of sand core for castings with thickness in 60, 30, 18 and 8 mm were simulated. The results show that the modified water glass sand has good knockout capability, and pouring experiment results also verify the simulated results.

用上述计算程序模拟计算了壁厚分别为60、30、18、8mm的铸件砂芯温度场分布，模拟结果表明改性水玻璃砂有好的出砂性，浇注实验证实了计算机模拟分析结果。

The explicit dynamic code DYNA3D was used to simulate the drawing process of cross member part.

对汽车底盘横梁拉深成形过程进行了数值模拟，对比分析了数值模拟结果与实验结果，同时讨论了凸模的虚拟冲压速度对数值模拟结果的影响。

In addition, the imitation method of spin-up and spring back drag loads for column style drop test-bed is discussed, and determined the reasonable imitation style, perfected drop test technology.

另外，本文对国内立柱式落震试验台的起转和回弹载荷模拟方法进行了研究，确定了合理的模拟方式，完善了落震试验技术；通过模拟起落架落震试验的钢球冲击钢板的冲击实验，对机轮垂直载荷的精确测量问题进行了初步的研究；研制了一套监测起落架投放高度的测量系统；用Turbo C和VC++6.0编写了落震试验数据采集和处理系统的应用软件。

By plotting a V-T curve with the data from MD, Tg was determined, which was compared well with calculated values and could qualitatively explain the effect of structure on glass transition of amine crosslinked epoxies although its absolute value having a big deviation from experimental results.

用模拟得到的数据作V-T关系曲线，用曲线上的转折点确定Tg的值。该模拟值与计算值有很好的吻合，尽管与实验值有较大的偏差，固化剂对Tg的影响可以用MD模拟定性得到。

And, the α parameters of frequency chirping of the cutoff intensity modulator are given at first. The cutoff conditions of metal-clad strip or rib waveguides are analyzed by modifying dual effective index method and simple effective index method, respectively.

在理论上，详细论述了截止型强度调制器的工作机理，结合耦合模理论，用近似方法对截止型强度调制器的调制特性进行理论模拟，模拟结果与实验结果的变化规律基本相符合；并首次给出截止型单波导强度调制器频率啁啾α因子的模拟结果。

The flow stress was repeated by calculated using the "single factor" flow stress formula, the metal machining process was simulated interatively with new flow stress. When simulating value was in good consistent with experimental result, the "three-high" data and flow stress data were obtained.

由&单因素&流动应力公式反复计算与模拟应变率对应的流动应力，基于新的流动应力有限元模拟迭代的进行并追求模拟值与实验结果的一致，获取能反映切削材料力学性能的&三高&数据和流动应力数据。

It means AIMD is a reliable method to simulate liquid and amorphous systems. All the supercells employed in our paper contain more than 100 particles and the simulation time is about several picoseconds.

结果显示，我们的模拟虽然仅仅选取64（和100）个原子的立方超元胞和20皮秒的模拟时间，但是得到的数据与实验结果极为吻合，说明从头算分子动力学方法模拟非晶态合金是可靠的。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。