非数值计算

Treating the anharmonic terms of potential energy as perturbations,and employing the formulas for atomic displacements and Hamiltonian in phonon occupation number representation ,the formulas for thermal expansion coefficients of crystal nano-wires are derived and the numerical calculations are carried out in this paper.

将原子间相互作用势的非谐项作为微扰，运用声子数表象中的晶格原子振动位移和晶格振动哈密顿公式，推导了纳米晶体线的热膨胀系数公式，并进行了数值计算。

An accurate and effective numerical method is employed to study the propagation characteristics of ultra-short laser pulse in inhomogeneously broadened two-level medium.

用数值计算的方法研究了非均匀展宽二能级体系中超短激光脉冲的传播特性。

Based on the non-classic theory of plasticity, the elastic and plastic constitutive relationship is established for peaelitic colony with finer interlamellar spacing, and the corresponding numerical method is also developed.

基于非经典塑性理论，建立了珠光体团的弹塑性本构方程，发展了相应的数值计算方法。

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。

The altitude characteristics and velocity characteristics of three types of solid ducted rocket, which are choked solid ramrocket with fixed mass flow rate of fuelrich gas generator, unchoked one and the one working under fixed mass ratio of air to fuel, were numerically studied.

通过数值计算，分析了燃气流量固定的壅塞式固体火箭冲压发动机、等空燃比工作的固体火箭冲压发动机和非壅塞固体火箭冲压发动机的高度特性和速度特性。

The flow field of a waterjet propulsion system,which is meshed by structural and unstructural grids,was calculated numerically with the steady state multiple frame of reference method.

采用结构化网格与非结构化网格相结合的方式划分了喷水推进系统的流场区域，采用稳态多参考系方法进行了数值计算。

Unsteady conjugate numerical simulation results for the solar chimney prototype in Spain show that the soil has the effect of energy storage and can modulate the difference of output power of the solar chimney power plant system between day and night, and that the solar radiation intensity has a significant effect on the energy loss from the system which will increase with the increasing of the solar radiation, and that the canopy of the collector is the main part of energy loss through the system, with a heat-transfer rate per unit area about 10% the amount of the solar radiation.

以西班牙试验电站模型为例进行的非稳态耦合数值计算结果表明：土壤具有较强的蓄热作用且能很好调整系统昼夜发电峰谷差；太阳辐射强度对系统散热损失的影响相当显著，太阳辐射越强，散热量越大；集热棚的顶棚是系统散热损失的主要部件，散热热流密度约为太阳辐射的10%。

The power law scheme was used to calculate convective flux and diffusive flux,the over-relaxed correction approach was employed to calculate cross diffusion flux,and Rhie-Chow s momentum interpolation method along with SIMPLEC procedure was used to derive water level correction equation.

针对非结构网格下的潮流数值计算，采用有限体积法离散基本方程，对流-扩散项离散采用幂率格式，交叉扩散项引入超松弛校正方法，水位校正方程应用Rhie-Chow动量插值思想和SIMPLEC类算法导出。

Unsteady cavitating flow around a disc cavitator and its drag characteristics were studied numerically using the filter-based model.

应用基于滤波器的湍流模型对绕圆盘空化器空化非定常流动和阻力特性进行了数值计算和分析。

The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load.

利用FLUENT软件数值计算了二维柔性鳍作升沉纵摇运动时的推力系数及推进效率，探讨了修正Bose变形方程、均匀载荷和非均匀载荷悬臂梁变形方程等三种柔性模式下纵摇轴位置对摆动鳍推进性能的影响，其中纵摇轴在尾缘处能够获得更大的推力，而最高的推进效率分别对应修正Bose模式下纵摇轴距首缘1/3弦长处和悬臂梁柔性变形模型下纵摇轴距首缘2/3弦长处。

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。