aerodynamic drag

The aerodynamic drag of train in tunnel is calculated on the basis of the mathematical model of turbulence.

对高速列车在隧道中行驶时所引起的湍流场进行了数值模拟，计算了列车所受到的空气阻力。

An Investigation to the Effects of Add-on Devices on Reducing Aerodynamic Drag of Domestic Trucks

用空气动力学附加装置降低国产货车气动阻力措施的探讨

effect of reducing aerodynamic drag coefficient on constant-speed fuel economy of truck

降低载货汽车空气阻力系数对等速燃耗的影响

It is very important to reduce the aerodynamic drag and noise for a transport vehicle.

减小汽车行驶中的空气阻力,抑制行驶时的气动噪声具有十分重要的意义.

As well, due to the high terminal velocity, the aerodynamic drag penalty would be particularly great.

同时，由于高终端速度，气动阻力的刑罚将是特别大。

if the velocity increases more, aerodynamic drag and aerodynamic moment due to the exterior airflow increases dramatically, which influence greatly the dynamic properties, the fuel economy and the operating performance of cars.

随着车速的进一步提高，汽车受到的气动力以及气动力矩也越来越显著，它们很大程度上影响着汽车的经济性，动力性以及稳定性。

Trailing edge of fork crown and frame down tube present a virtual continuous surface to the wind. reducing aerodynamic drag.

前叉肩部的延伸边缘和车架的下管形成一个虚拟的连续迎风面，从而有效地减少风阻。

Theoretical and Experimental Study to Mechanism of Aerodynamic Drag Reduction of Container Truck with#-Shaped Fences

集装箱货车加装井字型格栅减阻的机理研究

Analytic Calculation of Piston Wind Velocity and Aerodynamic Drag in High-Speed Train Tunnel

高速铁路隧道内列车活塞风和空气阻力的解析计算

Aerodynamic Drag Calculation of the High-speed Train Running in Tunnel with Double Shafts

高速铁路双竖井隧道列车空气阻力计算

And the partition wall will increase aerodynamic drag about 10%.

隔墙将增加10.0%左右的空气阻力。

aerodynamic drag computation and numerical analyses of aerodynamic characteristics about camion

大型载货车气动阻力计算与流场分析

Study on Numerical Simulation of Aerodynamic Drag of Train in Tunnel

隧道中列车空气阻力数值模拟研究

The fastest human-powered vehicles at sea levels are recumbent bicycles enclosed in streamlined aerodynamic shells. These vehicles have an upper speed limit near 40 m/ s-the speed at which the human can just barely produce enough thrust to balance the drag force from the air.

目前最快的人力车是包裹在流线型空气动力学外壳里的躺式自行车，这种自行车的速度最快能达到将近每秒40米，再快人力就已经不足以抗衡空气阻力了。

By extending length of the test floor properly, the aerodynamic drag coefficient can be measured more precisely.

适当延长地板，可提高气动阻力系数的测量精度。

Every external payload extracts a performance price in aerodynamic drag.

对于任何的外部挂载在空气阻力上都要付出性能代价.

In the end, the effect of coefficient of aerodynamic drag, rolling resistance coefficient and efficiency of powertrain on fuel economy are analysed.

最后，分析了风阻系数、迎风面积、滚动阻力系数和传动系效率对整车燃油经济性的影响，为ISG-MHV进一步的优化设计提供了依据。

The mechanism of reducing aerodynamic drag by acoustic excitation was briefly analysed.

本文首先简要地分析了声激励减阻机理.

through analyzing flow pattern of external flow-field in detail, the relationship among flow theory, flow character and aerodynamic drag force around the mini passenger car is investigated and the reason why the drag force is produced is clear.

通过对外流场的流态详细分析研究，探讨了微型客车外部流场的流动机理、流动特征和气动阻力特性之间的关系，明确了气动阻力产生的原因。

Test re-sults in 1. 4m × 1. 4m and 8m × 6m wind tunnel show that, aerodynamic drag coefficient of front segment of train model changes with the nose shape, and that of the rear segment changes with its nose shape more apparently.

在1.4m×1.4m和8m×6m风洞中获得的试验结果表明，头型的变化使前段模型阻力系数变化，后段头型变化产生的阻力系数变化规律更加明显。