风洞

Air pressure distribution on sur-face of train(3 cars)and aerodynamic drag coefficient are obtained with sim-plified bogies and pantographs in calculations. Computational results are alsocompared with those given by model test in wind-tunnel.

计算中对转向架和受电弓处作了简化处理，得到了三车编组情况下列车表面压力分布及气动阻力系数，并与列车模型风洞实验结果进行了对比。

And protuberances are kept to a minimum.

车的外型是基于风洞动力学设计的，车身突出部分降到了最低程度。

This means we are talking of airspeeds between 10 and 100 m/s approximately, and tunnels in which the same air is recirculated.

这说明我们在谈及风速接近10到100米每秒，在风洞中同样的空气会被再流通。

In order to describe in detail the structure of mesoscale atmosphere circulation and its evolution, symmetry theory are extensively used in the past fifty years. A large number of wind tunnel and water tank experiments are practiced to reshow the physical process that often appear in the atmosphere and, to some extent, successfully explain many atmsophere circulation characters in surface layer. But because of the planetary reflection and small Re number deformation, these physical experiments can' t represent real conditions of the atmosphere, they also can' t distinct viscous boundary layer separation and non-viscous dynamical separation as well as show the circulation response to surface diurnal heating.

为了详细描述复杂地形区域大气中尺度环流的结构和特征，过去50年来人们广泛采用相似理论，利用风洞和水槽实验再现大气中的物理过程，并在一定程度上成功地给出了大气近地层的一些环流特征，然而由于边界层反射和小Re数形变作用的影响，物理实验的结果并不能真实地再现大气中的实际状况，尤其是不能正确区别边界粘性分离流场和大气非粘性动力分离气流，环流场对地形下垫面日周期热强迫的响应过程也难以再现。

The significantly increased diffusion and aerodynamics downwash effect, which are observed in the wind tunnel experiments and random walk simulations, should be not neglect in dispersion calculation.

风洞模拟实验和随机行走模拟均发现建筑物引起的扩散显著增强和明显的空气动力学下洗效应。

Ike first slammed into the Turks and Caicos and the southernmost Bahamas islands as a Category 4 hurricane, but thousands rode out the storm in shelters and there was no immediate word of deaths on the low-lying islands.

艾克4级飓风首先猛烈的袭击了土耳其和凯科斯群岛和最南部的巴拿马群岛，但是成千万的人们在避风洞里安全度过了飓风的袭击所以在这些较低的孤岛上并没有直接的人员伤亡。

The large amplitude rolling motion test was conducted in FL-8 low speed wind tunnel of CARIA.

在气动院FL-8风洞中，采用旋转流场下单自由度振荡机构进行了旋转流场下大幅滚转运动的动态气动特性实验研究。

Thus the errors caused by the improper modeling of ABL had been avoided.

在数值风洞模型中，着重对自保持平衡大气边界层的模拟进行了仔细考察。

The clear NACA 0012 was used airfoil as a standard model to validate the numerical model that will be used in the following simulation.

工作中首先以未结冰的NACA 0012翼型为标准模型进行了数值验证计算，再以经过检验的方法计算结冰模型，并与结冰风洞试验数据进行了对比。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失