数值计算

Specially,at lower power density of laser,quasi static model is used to simulate the radial heat dissipation from irradiated region to nonirradiated regions.

在数值计算中，应用部分线性法处理非线性非齐次热传导方程，得到相应的隐格式差分方程，再用追赶法求解隐格式差分方程，得出绝热边界条件下的温度的时间和空间分布，从而得出激光退火的再结晶厚度。

Finally, the system is investigated experimentally under the theory guidance, and some conclusions, which are useful for engineering, are obtained. The results show that the squeeze film damper is very effective in preventing sub-synchronous and nonsynchronous operation, and the stability of the system can be improved greatly.

最后采用实验研究与数值计算相结合的方法，对挤压油膜阻尼器在滑动轴承支承的转子系统中的减振特性及提高系统运动稳定性的特性进行了深入地分析，并得出了一些对工程应用有意义的结论。

By setting s olid foundations in physics and mathematics, and good skills in English and computating, graduate students in this program are able to involve in work in multi-discipline fields.

数理基础扎实，外语及数值计算基础好，适应面宽，能进行多学科结合，开展多方面的工作。

This is a short, convergent launching to MATLAB, a panoptic cipher grouping for mathematical and theoretical computing.

是一个集成化的计算机软件系统，它的主要功能包括三个方面：符号演算、数值计算和图形。

A numeric method evaluating stability degree of periodic solution based on perturbing response data is introduced by the aid of the concept of dynamic systems or flows.

从动力系统流的概念出发，给出了系统稳态周期解稳定度的数值计算方法。

Deduce the expression the ponderomotive force. The self-consistent nonlinear equations are worked out. The propagation characters are discussed.

推导了高功率微波对等离子体的有质动力的表达式，得出了自洽的非线性方程组，并对等离子体填充波导中的传播特性进行了理论分析，数值计算和粒子模拟。

The 3D numerical simulation of 154kA prebake anode aluminum reduction cells is conducted by the combination of the scalar voltage potential method and two scalar magnetic potential method s.

以标量电位法和双标量磁位法相结合，对 15 4kA预焙铝电解槽磁场进行三维数值计算。

At the same time, the load carrying capacity of the high strength reinforced concrete precast arc shaft lining is very high.

对高强钢筋混凝土预制弧板井壁结构的研究表明，实验结果与数值计算结果基本一致。

By using simplified elasticity and plasticity model of boundary surface in BIOT theory,numerical calculation is conducted for deformation and pore pressure of road soft foundation after overload and precompress reinforcement treatment.

在BIOT固结理论中使用简化的边界面弹塑—粘塑性模型，对超载预压法处理公路软基全过程的变形和孔压进行数值计算。

A set of quadruply coupled equations (fluid flow, convection-diffusion, energy conservation and mechanical equilibrium) with a number of cross-couplings and coupled constitutive relations is formulated to quantify the multi-physics of oil displacement by CO2 injection, implemented into and solved by using FEMLAB. FEMLAB is the first engineering tool that performs equation-based multi-physics modeling in an interactive environment. With FEMLAB, the coupled multi-physics model can be solved simultaneously. The applicability of this model has been demonstrated through an example of simulations for a two-dimensional reservoir of size 1000 m×1000 m with one injection and one production wells. Model results illustrate the significant importance of the cross-couplings between individual (thermal, hydrological, chemical and mechanical) physics.

首先，建立一套流、固、热、多相流等多场全耦合控制方程组及其相应的耦合本构关系；然后，采用FEMLAB为工具来模拟三次采油阶段CO2驱油过程中的流、固、热、物质守恒等多场之间的全耦合作用，是第一个人机交互式的基于偏微分方程组的多物理场耦合分析的工程工具，利用FEMLAB，该4个耦合方程组成的方程组可以一次同时被求解出来：最后，应用该模型来求解一个二维油田的驱油情况，数值计算结果表明，原位应力、注入温度、注入压力等因素对CO2的地下贮存效率、驱油速度等有重要影响。

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。