数值

High-speed train, train wind, numerical calculation, aerodynamic force

高速列车，列车风，数值计算，气动作用力

The three-dimensional viscous calculation makes the total and part study of the complex flow in turbomachinery possible, and it provide a reliable numerical improvement method the aerodynamical components design.

可以从整体和局部研究叶轮机械内复杂流场的流动现象，为改善和提高其气动部件的设计提供了可靠的数值方法。

Two-equation turbulence model is used in numerical simulation for the side-air burner, compared with the practical measures and tests, good accordance achives. This method can bring great convenience in analyzing aerodynamical field of boiler. Secondly the method of XRD is used in analyzing the phase transformation in the course of dynamic slagging test, so we can describe the process of slagging comparatively accurately. Last this paper introduces a kind of fuzzy mathematics model which comprises an assemblage combined by seven change factor.

本文首先采用k—ε双方程模型对水煤浆侧边风燃烧器进行了数值模拟，并与实际锅炉燃烧器冷态调试试验结果对比，结果吻合较好，这为我们分析炉内空气动力场特性提供了参考；其次对锅炉结渣动态特性试验，采用XRD的分析方法，较为准确的描述了实际锅炉结渣的过程；最后为了准确的判断出水煤浆的结渣倾向，本文对锅炉结渣的七个影响因素提出了模糊综合判断模型，正确的反映出了该水煤浆的结渣倾向。

The incorporated model is evaluated by simulation results of two different building aerodynamical scheme in southeast region of Beijing area, which are building drag scheme and aerodynamical urban canopy scheme. The conclusions are drawn by the comparisons between the simulation results of the wind speed and the observations of the automatic weather stations in the urban areas: the simulated results of incorporated model are more in reasonable agreement with the observations than that of building drag scheme, and the diurnal trend of that is more agreement with observations.

采用建筑物拖曳法和建筑物动力冠层方案两种不同建筑物动力学处理方法对北京地区东南部进行模拟，通过城市地区水平风速的模拟结果与自动气象站实测资料对比发现模拟结果与实测相当吻合，建筑物动力冠层方案的引入能够更好地实施对城市地区的水平风速分布的数值模拟。

Firstly the k-e two-equation turbulence model is used in numerical simulation of the flow field ,compared with the practical measures and tests, good accordance achives. This method can bring great convenience in analyzing aerodynamical field of boiler. Secondly the method of ash-composition, ash-melting-point, XRD is used in analyzing the phase transformation in the course of dynamic slagging test, so we can describe the process of slagging comparatively accurately. Last this paper introduces a kind of fuzzy mathematics model which comprises an assemblage combined by seven change factor.

接着采用标准k—ε双方程模型对炉内冷态空气动力场进行了数值模拟，并与实际锅炉燃烧器冷态调试试验结果对比，结果吻合较好，这为我们分析炉内流场提供了参考；其次对锅炉静态、动态特性试验，采用灰成分分析、灰熔点测试及X光衍射物相分析方法，较为准确的描述了实际锅炉结渣过程；为了准确的判断出水煤浆的结渣倾向，本文对锅炉结渣的七个影响因素提出了模糊综合判断模型，正确的反映出了该水煤浆的结渣倾向。

The numerical solution of incompressible viscous flow over an aerofoil is obtained by H-type grids and a special difference scheme.

本文用H型网格和特殊的差分格式数值求解了粘性不可压缩叶型绕流。

The calculation of anisotropic plate with aerofoil manhole under external load was carried out.The numerical solution of hole-edge stress field was obtained.

对含机翼检修孔的正交各向异性板在外荷载作用下进行计算，得到孔边应力场的数值解。

And then, after establishing the optimization model in accordance with the principle of optimal design of shape formulas, we could obtain the numerical optimization aerofoil on the basis of NACA0018 master pattern solved by the Fluent console, and discuss the reasons of improvement of power coefficient.

然后按照形函数的优化设计原理，建立了优化模型，用Fluent平台求解，在NACA0018母型基础上得到数值优化翼型，并探讨了能量利用率提高的原因。

Boundary flow around an aerofoil controlled by streamwise electromagnetic force was simulated numerically at the low Reynolds number.

在低Re数条件下，对流向电磁体积力影响翼型体表面边界层流动过程进行了数值模拟。

This paper discusses the theory method calculating surface temperature of ballistic target above aerosphere, and analyses the effect of dimensional orientation of target s flight gesture and sun radiation direction on its surface temperature.

论述了大气层外弹道式目标表面温度的计算方法，对某弹道式目标大气层外飞行过程中当太阳辐射方向改变时其表面温度的变化情况进行了数值计算，分析了目标飞行姿态与太阳辐射方向之间空间方位关系的变化对目标表面温度的影响。

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。