模拟

This paper introduces the simulation method and advanced computer technology combining with ship statics principle into cargo shipment of bulk grain carrier,and develops loading simulation system of the bulk grain carrier. And introduce the principle of system and method of implement particularly. This Paper describes the relating high precision calculation algorithms of the stability,trim and strength calculation used by the loading software in detail,focuses on the algorithms of numerical value integral and curve difference and imitate algorithms.

另外，本文还引入模拟的方法，采用先进的计算机技术，结合船舶静力学原理和散装谷物船舶稳性校核的特殊要求，开发了散装谷物船舶的装载模拟系统，并详细介绍了该系统的原理和实现方法，在计算方法上，采用了高精度的浮态、稳性、和强度的计算方法。

A mathemetical model of magnetic field in electromagnetic separation of inclusions from molten aluminum under rectangle coil and 50Hz current is presented according to the magnetic vector potential integral equation and the basic theory of magnetohydrodynamics. The magnetic field distribution in the gap of coils is simulated by the model and the actual magnetic field distribution also is measured. The experimental results show that the magnetic field distribution in the gap of coils is uniform and is consistemt with the model simulation. The magnetic field designed accord the simulated result is proved suitable in the practice.

摘 要：根据电磁流体力学的基本理论，利用矢量磁位积分，建立了在采用矩形电磁线圈和工频电源的条件下电磁分离铝熔体中夹杂的电磁场数学模型，模拟计算了电磁感应线圈气隙中的磁场分布状态，同时对制做的感应线圈的实际磁场进行了测量模拟计算磁场的分布状态与实际磁场的测量结果基本一致，都表明在电磁感应线圈气隙中磁场分布均匀，可以进行分离铝熔体中的非金属夹杂。

The contents comprise the classification and principle of molecular dynamics, the interatomic potential, the related finite difference technique, the choice of initial and boundary conditions, the realization and control of equilibrium ensembles, the extraction of useful information and some applications in the materials science.

综述了分子动力学模拟技术的发展，介绍了分子动力学的分类、基本原理、原子间势函数的发展及势参数的确定、相关有限差分算法、初始条件和边界条件的选取、平衡系综及其控制、感兴趣量的提取以及分子动力学模拟在材料科学中的一些应用。

The key to simulating the procedure of rapid cooling correctly and efficiently is an appropriate interatomic potential, which should describe the interaction between atoms accurately as well as be easily used on large-scale computer simulation.

MD方法能否准确、有效地模拟金属快速凝固过程的关键在于：原子间相互作用势模型既能否足够精确地描述金属中原子间相互作用的关系，又要能够有效地用于计算机模拟。

Molecular dynamics simulation was carried out to study transformation pseudoelasticity in NiAl alloy with a initial B2 structure, using EAM type interatomic potential for NiAl.

利用NiAl合金的嵌入原子势，进行了B2结构NiAl单晶中相变伪弹性的分子动力学模拟模拟过程中系统的径向分布函数和键连线原子分布图的变化表明，在外加拉应力的作用下，B2结构的奥氏体向L10结构的马氏体转变，马氏体在长大过程中发生了变体间的转化与合并，不同取向的变体之间由于自协调效应形成共格的孪晶界面。

Through the analysis based dislocation theory and MD simulations,the connection between atom properties and macroscopic strain rate sensitivity of metals has been established by using Orowan\'s relationship as the bridge. The influences of interatomic potential and atomic mass on the stress dependence of dislocation velocity of FCC metals and strain rate sensitivity have been examined through MD simulations of a moderate scale.

依据位错运动的Orowan关系和研究位错速度对应力依赖关系的分子动力学方法，提出了研究金属原子性质与其应变率敏感性关系的分析方法；然后开展分子动力学模拟来研究位错速度对应力的依赖关系，依据数值模拟结果分析原子性质对金属应变率敏感性的影响。

Moreover, based on the boundary conditions recommended by the Paleoclimate Modelling Intercomparison Project, it is further indicated that vegetation feedback in East Asia, possible ice sheet over the Tibetan Plateau, and sea surface temperature reconstruction in the western Pacific different from the PMIP data source can induce additional climate effects, which partly reconcile model-paleodata discrepancies as displayed by the standard PMIP simulations.

在国际古气候模拟比较计划标准试验的基础上，进一步指出东亚植被的反馈作用、青藏高原可能冰川的反馈作用、以及西太平洋表面温度的作用能够引起额外的气候效应，可在一定程度上改进PMIP标准试验的模拟效果。

Chapter 5: Evaluate a given water-air intercooler both in academic and experimental ways so as to test the validity of the two ways.

第五章：以6BTA型水空中冷器为例，进行数值模拟评估，以验证试验平台和数值模拟评估方法的正确性。

The numerical computation results indicate that the CFD numerical simulation technology can effectively analyze the details of the flow field,helping to improve the intercooler flow path design.

数值模拟计算结果表明，CFD数值模拟技术可以有效的分析包括间冷器在内的整个流路的流场细节，改善间冷器的流路设计。

Based on the simulation of natural death process of 5% B-cell in biology clone selection, this paper proposes 8 kinds of updating algorithms according to intergeneration differential, theory of chaos, principle of mutation respectively, and selects the updated particles in terms of simulated annealing method.

因此模拟生物克隆选择中5%的B细胞自然消亡过程，在粒子群优化算法进化过程中分别基于代间差分、混沌理论、变异原理等方法设计了8种粒子更新算法，并按照模拟退火方法进行更新后粒子的选择。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。