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- Smoother vehicles may have drag coefficients of the order of 0.55. 光滑飞行器的阻力系数可能为0.;55量级。
- Ratio of lift coefficient to drag coefficient. 升力系数与阻力系数的比值。
- Ac- cording to these methods, we have calculated two aerofoil drag coefficients under different Reynolds numbers and Mach numbers. 按照上述方法计算了在不同雷诺数和不同马赫数下两个翼型剖面的摩阻系数。
- One very obvious feature of the measured terminal velocities and computed drag coefficients was their great natural variability (v.p. 125). 所测末速度和计算的拖曳系数的一个非常明显的特征是它们的重大自然变率(见125面)。
- The characteristics of wind field are numerically simulated by Fortran program, the lift and drag coefficients and Strouhal numbers are analyzed for several angles of attack. 文中采用编写的Fortran语言程序数值模拟了流场的变化特征,分析了在各种风迎角的情况下,具有方形截面的高层建筑的升力系数、阻力系数和Strouhal数。
- English: 740. One very obvious feature of the measured terminal velocities and computed drag coefficients was their great natural variability (v.p. 125). 中文:所测末速度和计算的拖曳系数的一个非常明显的特征是它们的重大自然变率(见125面)。
- The drag coefficient varies with the shape of the object. 拖曳系数随物体的形状而异。
- For these sorts of the bodies, the present computation gives the average drag coefficients, the Strouhal number is related to the shedding frequency of the separation vortices, and the flow pattern. 对这两类物体,计算的平均阻力系数,分离涡脱落的Strouhal数以及流态都与实验接近。
- The expression is not only applicable for calculating drag coefficients ofbig blunt body like seat-man system within arbitrary Mach number range,but also for other big blunt body as well. 此公式不仅适用于计算像人椅系统那样的大钝体,而且也适用于计算其它大钝体在任意 M 数范围内的阻力系数。
- Three calculative methods to determine sea ice drag coefficients, i.e.eddy correlation method, profile method and momentum method, were discussed,and their application conditions were analyzed respectively. 归纳了计算海冰拖曳系数的涡动法、剖面法和动量法,并利用动量法对低密集度平整海冰的拖曳系数进行了初步计算。
- In many cases an overall drag coefficient is given so that the net force on the surface can be determined. 在许多情况下,总的拖曳系数是已知的,因而可以确定作用于表面上的净力值。
- The lift and drag coefficient of flapping-wing MAV in different motion modes are calculated. 计算了扑翼微飞行器在不同运动模态下的升阻力系数;
- The wave drag coefficient also increases with increasing upswept angle at transonic speed. 在跨音速时,波阻系数也与上翘角有关,上翘角增加会导致波阻系数进一步加大。
- The friction drag coefficient increases with increasing afterbody fineness ratio and decreasing Reynolds Number. 后体摩擦阻力系数分别随后体的长细比的增加和雷诺数的减小而增加;
- Canard wing increases lift coefficient with the penalty of the increase of drag coefficient. 低于主机翼的鸭翼将加强前掠翼布局的缓失速特性。
- Such parameters of flow characteristics are investigated as lift and drag coefficient and vortex shedding frequencies. 计算了圆柱的升阻力系数、尾涡脱落+频率等描述绕流问题的主要参量。
- Cavity length depth ratio strongly influences flow field、total pressure recovery、drag coefficient. 凹腔长深比对流场特性、总压恢复、燃烧室阻力影响显著。
- The aerodynamic drag coefficient of a bus body model is measured in the wind tunnel with the acoustic excitation technique applied. 本文利用内部声激励技术,在风洞中对某厢式客车车身模型进行空气阻力系数的测试。
- Ben designed the fairing shell to have a drag coefficient that would allow me to achieve at least 50 kph on less than 130 watts of power. 本设计的整流罩外壳有阻力系数,使我实现至少50公里不到130瓦的功率。
- The streamlined shape of the vehicle to reduce drag coefficient, and the drag coefficient is the impact on vehicle fuel economy is an important factor. 流线型的外形能降低车辆的风阻系数,而风阻系数是影响到车辆燃油经济性的一个重要因素。
