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- The main parameters calibrated in the model are dispersion coefficient(a=0.07, b=0.7), roughness length(0.02m), wind drag coefficient(Cwd=3%), and evaporation rate(0.1/d). 经过率定后确定模型中主要参数值如下:扩散参数a=0.;07;扩散参数b=0
- wind drag coefficients 风应力系数
- Test of Influence of Wind Drag Coefficient on Typhoon Storm Surge Simulations 风应力拖曳系数选取对风暴潮数值模拟的影响
- 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。
- 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。
- Keywords wave;tide-surge;wind drag coefficient;bottom stess;radiation stress;the convection and diffusion equation; 波浪;潮汐风暴潮;拖曳系数;底摩擦应力;辐射应力;对流扩散方程;
- Styled with distinctively rounded edges so as to reduce wind drag and thereby increase fuel efficiency. Used especially of automobiles and vans. 流线型的具有独特圆边款式以减少风阻从而提高燃料效率的，用以特指汽车或轻型汽车的款式
- Ratio of lift coefficient to drag coefficient. 升力系数与阻力系数的比值。
- wind drag coefficient 风应力拖曳系数
- 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）。
- 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）。
- An optional spoiler not only sets off the boot lid, but together with the imposing diffuser and prominent flaps, it ensures that effects of wind drag are minimised. 可选配的扰流器，在取消行李箱盖的同时，配合扩散器与突出的副翼，确保该车的风阻系数达到最小。
- The drag coefficient varies with the shape of the object. 拖曳系数随物体的形状而异。
- 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。
- 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。
- Worse unless you are a racing technician versed in aerodynamics chances are excellent that your spoiler isn't doing anything more than adding wind drag and weight.That's costing you at the pump too. 如果你必须在车顶携带什么东西，那么近可能地减小东西的重量和体积，这样就能够节省燃料，提高车辆的空气动力学性能，并且能够避免由于车顶载物过重造成的重力不平衡所带来的不安全因素。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
