数值技术

Reduce the computing complexity of magnetic field integral equation with differential quotient, which makes the computing which combined field integral equation more efficiently.

在AIM算法的实现技术方面作了两个改进：一是采用了新的多极子展开方案，保证了迭代的数值稳定性；二是在差商逼近偏导数的过程中全部采用二阶形式，保证了差商逼近偏导数的精度。

The technique of numerical simulation has become a new direction in the research field of welding for the future.

数值模拟技术已成为今后焊接研究领域的一个新方向。

The main contributions of this dissertation are In chapter 2, we propose a scientific visualization system modal which is based on large-format display technology and Client-Commware-Server structure. In chapter 3 and chapter 4, we accomplish two large-scale scientific visualization systems. In chapter 5 and chapter 6, we propose HFFT on hexagon and parallel dodecahedron domains, and reduce the computational complexity from O and O to O and O . Lastly, we propose a parallel HFFT on distributed memory computers.

本文的主要贡献如下：提出了使用大屏幕显示技术、适用于大规模科学计算可视化系统的Client-Commware-Server模型；实现了油藏数值模拟和分子模拟两个大规模科学计算的可视化系统；给出了二维三方向六边形区域、三维四方向十二面体区域上的HFFT算法，将变换的计算复杂度分别从直接计算的O和O量级降到了快速算法的O和O量级；最后，本文给出了一种基于分布式存储的并行HFFT算法，并对影响、提高并行算法的若干因素进行了分析。

Tests with different layout parameters show that numerical modeling can help optimize the design of layout and re duce risks of crosswell seismic.

不同观测系统设计参数的成像试验表明，数值模拟可以帮助优化野外观测系统的设计，降低井间地震的技术风险。

In this lesson, the problem of the shoring form and the support parameters of shallow underground cavity belonging to strong effloresce band, is studied by force method calculation and numerical value analyzing, and so on.

在本课题中，通过力法计算、数值模拟等方面对浅埋强风化段地下洞室支护问题展开研究，并对煤矿井巷工程中的U型钢可缩性支架、型钢混凝土组合结构的设计计算方法进行一定的探讨，为现场工程设计和施工提供科学依据和技术参考。

And the computational analysis result has been verified through the electrobath and test method. Based on the above-mentioned research work, the 1000 kV standard capacitor has been designed and manufactured.

利用理论分析、数值计算以及试验研究的结果，设计并研制了1000kV标准电容器，并对该标准电容器进行了有关型式试验，电容稳定性、介质损耗、工频耐受电压等技术性能指标均达到同类产品国际先进水平。

ANSYS has friendly operating environment, strong functions and perfected post-processing. ANSYS can be applied to a lot of project fields and it can carry out structure analysis, nonlinear analysis, thermal analysis, electromagnetic field analysis, electric field analysis, fluid flow analysis and coupled field analysis etc.A combination beam is designed and on this beam simulation test using ANSYS and strength test using electrometric method are studied and contrasted. The result of the test shows that the ANSYS is reliable and can be applied to the engineering design and calculation without accident.

ANSYS软件是融结构、流体、电场、磁场、声场设计计算于一体的大型CAE软件，经过30多年的发展，取得了辉煌的成绩，并形成很多独有功能；ANSYS使用环境友好，功能强大，后处理技术完善；ANSYS在各类工程领域均有应用，可进行结构分析、非线性分析、热分析、电磁场分析、电场分析、流体流动分析、耦合场分析等；设计制造了一个组合梁，分别对其进行了ANSYS静力学强度数值模拟和电测法应力试验，对结果进行了对比分析，试验结果表明：ANSYS功能强大，分析数据安全可靠，可放心用于工程设计与计算。

Some closedforms of formulae are also obtained for the evaluation of the Cauchy prin-cipal integrals over quadratic boundary elements and linear internal cells of2-D problems.

通过采用以上各种技术成功地解决了三维弹塑性有限形变问题边界元法中最关键的数值积分的精度和效率问题。

The one-dimensional time-dependent Schrdinger equation was numerically solved with the symmetric splitting of the short-time exponential propagator and the fast Fourier transformation, and influence of intensity and pulse with on ionization of linear multi-ation molecular ion in two-color laser fields was researched.

利用短时指数传播子对称分割法和快速傅里叶变换技术，数值求解了一维含时Schrodinger方程，探讨了双色激光场中激光的基波和谐波强度之间的不同配比以及脉宽对线性多原子分子离子电离的影响。

Worked out the preliminary probing or studying therewith the expressible mathematical model, used the remote sensing technology to study the relation between the density of population and the intensity of urban hot-island effect.

在利用遥感技术研究城市人口分布密度和热岛强度之间密切关系的数学模型的数值表达上，做了初步的研究和探索。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。