模拟

The idiographic contents include several aspects as follows: Simulation programs named "DIOS" and "DESSIS", which are included in process and device simulation software named "ISE", are used to do some process simulations and device simulations.

具体内容主要包括以下几个方面：用工艺和器件模拟软件"ISE"中的模拟程序"DIOS"和"DESSIS"对具有不同场板结构的高压MOSFET进行了工艺模拟和器件模拟。

With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.

本文以水溶性气藏数值模拟研究为研究目标，在系统调研国内外文献、深入分析国内外研究现状的基础上，综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识，完成了以下研究工作并取得相应的研究成果；①通过对大量的资料调研，分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝，采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型，该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上，根据水溶性气藏数值模型编制了该数值模型的求解程序，该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响，发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响，地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性，在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性，发现在使用实验数据对水溶性气藏进行模拟时，模拟器可以很好的反映气藏开发的状态。

Sedimentation simulation can be divided into physical simulation and numerical simulation based on the methods of study utilized. Chapter 4 of this dissertation has carried out a physical simulation study about the processes of formation and laws of evolution of the fan delta in Baimiao gas field.

沉积模拟研究按其研究方法不同，可以分为物理模拟和数值模拟，本论文第四章系统开展了白庙气田扇三角洲形成过程及演化规律的物理模拟研究。

LES cooperated with the second order full extension ETG finite element method is applied to simulate three typical problems concerned with convection heat transfer with sufficient experimental data. By comparing the numerical results with the experimental results, LES is proved to be of better accuracy and stability when it is used to solve the problems concerned with convection heat transfer. The time history of the flow field and temperature field can be reflected better, and abundant information of the fields can be obtained. Furthermore the details of the change in the vortex structure can be captured.

应用大涡模拟与二阶全展开ETG有限元离散格式相结合的方法对具有实验基础的三个典型对流换热问题进行了数值模拟，并将模拟结果与相应的实验结果进行对比，证明了大涡模拟应用于对流换热问题中具有较高的稳定性和精度，能够较好地反映流场和温度场的时变过程，提供丰富的温度场和流场信息，捕捉流场中旋涡结构的变化细节，尤其适合于边界形状复杂的区段内含有大尺度各向异性涡的流动和换热问题的计算。

In this thesis, a series of the problems of stochastic simulation for geomagnetic field was investigated.

完整的随机模拟包含统计模型化，模拟抽样和模拟推断三个部分，本文比较系统地研究了地磁场随机模拟的若干问题。

The key technologies are studied and the simulation program is coded using C langrage to obtain the fields such as velocity field and temperature field. Volume of fluid method is used to capture the free surface of the material.

采用"移动的网格"处理计算区域边界的移动问题，实现对真实物理过程的数值模拟，并将模拟结果与比较成熟的商品化有限元软件DEFORM-3D的模拟结果进行对比，表明所建立的有限体积法模拟模型有效、可靠。

This essay would like to study the purposes and goals, the basis of course-setting, the allocation of course resources, and the operation of the required courses, and so on in order to find some helpful and constructive ways to a better construction of courses in Moot Court teaching and to the best use of this teaching method.

本文从模拟法庭课程建设出发，论述了模拟法庭课程的教学目的与教学目标、课程依据、课程资源的配置、课程实施等问题，以期对模拟法庭课程建设、对模拟法庭教学优势的发挥有所裨益。

In order to improve present Monte Carlo methods, method changing the node to optimistical orientation corresponding to the system having the lowest energy was proposed, which ensures the grain boundary moving to its curvature center. The new method avoided re-nucleation, and increased simulation efficiency, and made the simulation process more approaching the physics foundation of grain growth. The results show that the grain growth exponent, n=0.478, is close to its theoretic value, and the topological structure accorded with the normal grain growth of the real material.

简要回顾了晶粒长大理论并分析了现有Monte Carlo模拟方法的不足，提出了一个"择优转换"方法，确保节点转换时晶界向其曲率中心移动，以致模拟过程更接近物理基础，避免了重新形核的发生，使模拟效率大大提高，模拟的晶粒长大指数达到0.478，已接近理论值，组织形貌和实际材料正常晶粒长大组织基本一致。

The design idea of mineral processing simulation software based on sequential modular approach is described,which is applied to grinding-classification process in the ore dressing plant of some nonferrous smelting enterprises.

采用设计的选矿流程模拟软件，模拟某有色冶炼企业选矿厂的磨矿分级过程，得到了与实际吻合的模拟计算结果，说明所设计软件能较好地模拟实际选矿流程。

Based on modern optimization theory and optimal control theory, this dissertation studies some questions as follows:1. The optimization model of parameter identification of three-dimensional geologic history numerical simulation, algorithm and its applicationGeologic history numerical simulation is a basic content of basin numerical simulation, and the porosity is the major parameter in the evolution and development process of oil-bearing basin. According to the sedimentation and burial mechanism, the physical and chemical principles of oil geology, the mudstone porositys non-linear parabolic partial differential equation has been established.

本文应用现代最优化及最优控制理论，对如下一些问题进行了研究： 1、三维地史数值模拟的参数辨识优化模型、算法及应用地史模拟是盆地数值模拟的一个基础性的研究内容，地层孔隙度是含油气盆地地史演化发育过程中的重要参数，根据地层沉积埋藏机理和石油地质的物理化学原理，通过引入数学物理方程概念，建立了泥岩三维孔隙度场方程，根据问题的特点，给出了方程的定解条件，对方程的动边界也给出了处理方法，并且证明了解的存在性与惟一性，在此基础上建立了以当今实测数据为拟合准则的三维地史数值模拟的参数辨识优化模型，这是一个含有二阶偏微分方程约束的泛函极值问题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。