数值计算

The numerical results shows that the positions oftroughs and ridges in the westerlies are well in agreement with the obser-vation,but there is discrepancy in intensity.

用西藏高原和洛矶山的实际地形作了数值计算，计算结果表明，地形扰动可以解释西风带平均槽脊的位置，但扰动的强度与实况有一些出入。

This paper introduces the structure, especially the technics of armature winding and the way of arrange method of the motor. Based on it, the physical and mathematical model of the armature magnetic field was found. Then making use of the FEM to compute and analyze the armature magnetic field. At last, the influence of the armature magnetic field to the main field is discussed.

本文通过对此种电机结构，尤其是电枢绕组工艺及盘列方式的简单介绍，建立了盘式无铁心永磁同步电机电枢磁场的数学模型和物理模型，并利用有限元数值计算方法对电枢磁场进行计算，分析了此种电机电枢磁场的分布情况以及它对主磁场的影响

Based on the literature review, this paper analyzes and investigates the development and status of digital image processing techniques in quantitative analysis and associated numerical simulation of the geomaterials. It includes quantitative analysis of particle shapes, quantitative analysis of internal structures of soil, rock, asphalt concretes and cement concrete, quantitative analysis of macro-structures of rock mass in the ground, and numerical modeling and simulation of geomaterials by taking into account their actual internal structures, Based on the review results, the paper discusses the development history and future trend of the utilization of the digital images and associated techniques in soil and rock.

本文在研究相关文献的基础上，分析和研究了数字图像技术在土、岩及混凝土内部结构定量分析和力学数值计算中的发展过程和研究成果，内容包括：单个骨料颗粒形态特征定量分析；土、岩和混凝土内部结构定量分析；岩体结构定量分析中的应用；基于数字图像处理的土、岩和混凝土细观结构力学计算。

In the second part of of this thesis, we firstly derivate the operation condition of intracavity SHG of dualwavelength laser from the rate equation, and then numerically calculate the relationship between the laser operation parpmeters and the pumping powers. And then we discuss two possible ways to get balancing outputs of the harmonic waves of the two wavelengths. By comparing the two ways, we find that the method by increasing the geometrical factor of 1079. 5nm SHG has the higher efficiency than the method by adding the additional loss of 1079. 5nm basic wave. Besides, the first method is easier to realize in experiment than the second method.

本论文第二部分从速率方程出发，通过求解速率方程的稳态解得到了Nd：YAP腔内倍频双波长激光的连续运转条件，数值计算得到了随泵浦功率变化的激光运转情况；计算、分析了通过增加主波长的倍频耦合几何因子和增加主波长的腔内损耗两种方法获得均衡的双波长倍频输出的运转情况，通过二者的比较，发现增加倍频耦合几何因子的方法比增加损耗的方法效率更高，而且在实验上更易于实现。

This character of the photonic crystal containing defect can be used to enhance spontaneous emission of atoms and to make narrow band filter.

为了能对光子晶体进行数值计算，人们一直不遗余力的在寻求新的计算方法。

Simulated the backlash process of cannon barrel, advanced a new algorithm for the computation of muzzle brake efficiency.

本文用数值计算的方法模拟火炮身管自由后坐过程，给出了一种新的炮口制退器效率计算方法。

The hydraulic loss of conduit in both vertical pump system and bulb tubular pump system were calculated using the numerical simulation, and the influence of pump impeller diameter on hydraulic loss of conduit was analyzed. Based on the similitude rules of impeller pump, the relationship between pump impeller diameter and nD value and the influence of pump selection and design were analyzed.

采用数值计算的方法，分别计算了具有不同水泵叶轮直径的立式轴流泵装置和灯泡贯流泵装置的流道水力损失，比较了水泵叶轮直径对流道水力损失的影响；根据叶片泵的相似律，分析了在一定设计流量条件下水泵叶轮直径与nD值的关系以及对水泵选型设计的影响。

Meanwhile, wire-feeding velocity of the core wire was confirmed through applying numerical calculation, which was verified with actual wire-feeding velocity used in production.

从传热传质理论出发研究喂线球化处理过程中芯线钢带在铁水中的溶解过程，充分考虑了铁水温度、含碳量和镁合金芯剂状态对钢带溶解的影响，给出相应的数学模型，采用数值计算的方法确定了芯线的喂线速度，并用生产中实际应用的喂线速度进行了验证，结果表明，计算结果与实际喂线速度基本吻合。

Structure of aero- engine case under the effect of combined axial pressure and end twist;2. The integration of CAD parametric modeling,finite element method,classical strength calculation theory with modern optimal design techniques produces a complete and systematic design procedure for performing parametric optimal design of turbine disk, engine case and turbine shaft.

开发了基于大型有限元分析软件Ansys的燃气涡轮发动机辅助设计系统，该系统将CAD参数建模技术、工程有限元数值计算方法、经典强度计算理论与现代优化设计技术相结合，实现了涡轮盘、机匣和涡轮轴典型零件的参数优化设计的完整设计流程，建立了结构优化设计平台；并通过机匣的结构优化设计实例，验证了燃气涡轮发动机辅助设计系统的有效性。

Author collected and read a great mount of materials about high performance ships, especially about the hydroelastic theory and its related theories, and on the basis of it author developed a kind of theory to analyze the fluid-structure interaction of hybrid catamaran in time domain. This theory could be applied not only for the hybrid aircushion-hydrofoil catamarans, but also for other traditional ships and marine structures.

作者收集、阅读和分析了大量的国内外有关高性能船舶尤其是有关其流固耦合分析理论及相关理论方面的文献，在此基础之上，针对未来船型的发展趋势，提出了一套时域内的有关气-翼复合型高速双体船的流固耦合分析理论和数值计算方法，该分析理论和计算方法还同样适用于气垫船、水翼船等单体或双体常规船舶以及其它海洋工程结构物的流固耦合分析。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新