本文基于最优化理论，利用模拟电荷法对一个小型的交叉场天线（CFA）进行了场的数值分析，得到CFA周围的电场、磁场及玻印廷矢量的分布。
In this paper, we introduce the basic theory and the design of CFA, and analyze the field of CFA by CSM on the basis of method of optimization.
然后应用有限元法对气膜流场进行了有效的数值模拟计算及优化设计分析。
Then the application of finite element method has been carried on effective numerical value analog computation and the design analysing to the gas membrane flow field has been optimized.
该法先将实因式分解问题转化为数值优化问题，再用基于混合杂交与间歇变异的演化算法求解该优化问题。
The proposed method transfers the real factorization problem into a numeric optimization problem, which is solved by an evolutionary algorithm based on hybrid crossovers and intermittent mutation.
在此基础上，将数值模拟技术和优化算法相结合，提出了基于数值模拟技术的浇口位置的优化方法：经验搜索法。
The numerical simulation methodology and optimization algorithms are integrated to optimize gate location of mold design. A new optimization method of experience search is founded.
数值计算运用时域有限差分（FDTD）法，数值模拟结果为以后的反应器流光放电模拟及结构优化提供依据。
The procedure is based on a finite difference time domain(FDTD) scheme. The numerical results will offer theoretic reference for streamer discharge simulation or geometry optimization of reactor.
建立了连续换热式氨合成塔轴向最佳温度和最大合成率的优化模型，采用牛顿迭代法和龙格-库塔法对模型进行了数值解。
The optimal mathematical models on the axial optimum temperature and maximum synthetic rate for a continuous heat exchange ammonia converter were established.
实例数值计算结果表明，灵敏度分析法对接触器结构设计参数的局部调整与优化设计提供了一条有效途径与理论依据。
The calculated result shows that the sensitivity analysis method gives convenience and a theoretical basis for the partial adjustment of the contactor structure design parameter and optimum design.
为了提高数值计算效率和准确性，提出了基于多级响应面法的确定翼梢小翼气动外形参数的一种优化方法。
In order to improve the efficiency and accuracy of the numerical calculation for the aerodynamic design of winglets, an optimization method based on multi-level response surfaces is proposed.
摘要在基于有限元数值模拟的基础上提出了反向最小余量法，用以优化芯辊进给速度曲线。
A new method, which named reverse shrinking surplus method, has been pointed out based on the fem in order to optimize the speed curve of the spindle.
采用空间薄壁板壳元与空间梁元混合离散模型对大吨位起重机钢丝绳缠绕卷筒进行有限元分析，将有限元方法与进退法优化方法耦合形成数值算法进而对卷筒进行优化设计。
The numerical method represents a coupling between the optimum method of advance and retreat and the finite element analysis for the design on large hoist drums of cranes that is an actual structure.
数值分析法，尤其是有限单元法已经成为岩土工程数值分析和优化设计的重要工具。
The numerical analysis method, especially the finite element method (FEM) has become the primary tool of numerical analysis and optimization design in geotechnical engineering.
最后通过有限元数值模拟技术验证并比较优化所得工作带与经验法确定的工作带对金属流动均匀性的影响。
At last, the optimized bearing of the extrusion die was analyzed by FEM and compared to the design with experiential way.
最后通过有限元数值模拟技术验证并比较优化所得工作带与经验法确定的工作带对金属流动均匀性的影响。
At last, the optimized bearing of the extrusion die was analyzed by FEM and compared to the design with experiential way.
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