阻力系数

与无喷射的情形相比，底部阻力系数CD减小了。

Thebase drag coefficient C_D decreases as compared with the case without injection .

海面空气阻力系数CD计算方法的研究

A study of the computing methods for the drag coefficient c_d in air over sea

汽车空气阻力系数CD值的测试

Testing on the C D Value of Automobile Air Resistance Coefficient

枯落物覆盖量增加使地表曼宁阻力系数n值加大，在枯落物覆盖量小于10.0t。

The Manning resistant coefficient ( n ) increased with litter coverage .

基于Matlab的板式塔阻力系数建模

Modeling Resistant Coefficient for Sieve Plate Column with Matlab

阻力系数CD对于确定弹的性能和射表是一个重要的量。

The coefficient of resistance C_D is important for the establishment of the characteristics and shooting-table of a shell .

通过实际工程中测量的污垢粗糙高度ks，拟合出了污水管道沿程阻力系数公式。

Through the metrical dirt roughness height in practicable project , the on-way resistance coefficient formula of sewage pipe is fitted .

基于RBF神经网络的旋风器阻力系数预测模型

The Model for the Predication of Resistance Coefficient of Cyclone Based on RBF Neural Network

履带车辆最小滚动阻力系数f（min）和行动部分效率ηx分析

Analysis of Minimum Rolling Resistance Factor f _ ( min ) and Moving System Efficiency η _x of Tracked Vehicles

探讨了流速分布特性参数ξ、阻力系数K和交界面阻力与底部阻力之比α的变化规律；

Its characteristic factor ζ . resistance coefficient K and the ratio of resistance related interface to bottom , α are discussed .

根据阻力系数CD＝f（Re）的实验规律列出球体沉降中的阻力项，并建立微分方程，求得其解析解。

Based on the Diagram of Resistance Coefficient C D versus Re , a resistance term and differential equation were formulated .

通过物理实验，分析了无因次数F与植被阻力系数及植被糙率系数间的关系。

In physical experiment , the correlation between F and vegetation drag coefficient , as well as vegetation roughness , were analyzed .

结果发现，附加摩擦阻力系数λz随弗劳德数Fr的增加而减小；

It has been found that the additonal friction factor λ z decreases with increasing Froude number Fr ;

基于实验结果，提出动量、摩擦修正系数K，阻力系数ξ和不均匀度M1的实验关联式，并提出了一个排管式液体分布器的设计方法。

The correlations are experimentally given for the modified coefficients of momentum-friction , resistance factor and the maldistribution factor . A design procedure for Ladder distributor is proposed .

通过ADAMS/View建立了灵巧子母弹子弹的实体模型。根据已知阻力系数，利用STEP函数实现了阻力系数的自动查询。

This paper uses ADAMS / View software to establish the model of bullet of smart cluster , uses the known drag index and STEP function to realize automatic inquiry of drag index .

通过实验测定了B型和C型两种止回阀的自身阻力系数和系统气流合流阻力系数，并对两种止回阀所对应的系统排风量进行了实测。

It is obvious that the gas turning back phenomenon occurs in variable pressure gas exhaust system . The resistance coefficients of two types of check valves ( B and C ) are experimentally measured .

作者引用由渐近匹配展开方法所确定的N-S方程球体绕流渐近展开解将蠕变流推广到急变流的球体绕流解，导出了泥沙沉降阻力系数的计算公式。

The asymptotic expansion matched method is applied to calculate the flow around a sphere based on N-S equation .

通过对流体力学中沿程阻力系数和泵与风机工作点等问题的求解，介绍了EXCEL单变量求解器和曲线拟合的方法。

Through calculating friction factor and operating point of pump or fun of two examples on fluid mechanics , methods using solver and curve-fitting in EXCEL were introduced .

随浓度增加，HPAM溶液的表观粘度和残余阻力系数增加，衰竭层厚度减小；

With the concentration increase of HPAM solutions , the apparent viscosities increase and the depleted layer thickness decrease .

本文提出了气提式反应器（ALR）中液体循环阻力系数关联式；

Liquid circulation and gas hold-up in air-lift loop reactor have been investi - gated .

在国内排水型登陆运输船领域内，首次获得了Fr>0.5速度范围内的剩余阻力系数Cr的分布曲线。

This results in first creation of distribution curve of residual resistance coefficient Cr in the Fr > 0 . 5 speed range in the design of displacement type landing transport ship in China .

开缝长度相同的情况下，增大攻击角，Nu数和阻力系数都有明显的增加；

With the same extent of slot , Nu and the friction factor both increase with increase of the angle of aggress ;

第二级分离器采用了作者新研制成的φ240mmPV型高效旋风分离器，其尺寸均经优化设计，实测的切割粒径为1.2μm，阻力系数约为12。

The second stage cyclone is the new-developed φ 240 mm PV type cyclone separator with optimum designed dimensions .

在一定的条件下，Gurney襟翼可以明显增加翼型的升力系数但不过多增加阻力系数。

Under some condition , Gurney flap can increase lift coefficient and lift drag ratio of the airfoil .

采用离岸800m高100m的气象铁塔观测所得的资料，利用粗糙度、阻力系数及幂指数公式，计算了辽东湾东海岸地区的粗糙度、阻力系数及风指数。

The surface roughness , drag coefficient and wind index are calculated with the data obtained from tower-based sensors located about 800 m from the coast .

实验结果表明，直立植被高度和密度对地表总阻力系数CD和粗糙度z0都有影响，但是程度不同。

Both the height and density of standing vegetation influenced the drag coefficient and roughness length , but their relative importance was different .

计算结果表明：入口烟气流速越高，脱硫管簇中烟气压力、烟气中SO2浓度变化幅度越高，脱硫管簇的阻力系数逐渐增大。

The calculated results show that a large variation of pressure and SO_2 concentration occurs in the domain with the increasing at inlet gas velocity , and the flow resistance coefficient increases .

试验结果表明，淹没植被在植被密度和排列方式相同的情况下，若植被抗弯指数F值小于12.2371，植被呈完全刚性，植被糙率系数和阻力系数与F值无关。

The result indicates that , under the same condition of vegetation density and arrangement , when F is smaller than 12.2371 , the vegetation behaves absolute erectness and the vegetation roughness coefficient and drag coefficient have no relation with F.

通过实验研究得出了N2泡沫压裂液在15~45MPa范围内摩擦阻力系数和广义雷诺数之间的计算关联式，其在本文实验工况下的平均计算误差为10.2%。

The relational expression between the frictional resistance factor and generalized Reynolds number is obtained by the experiments , and whose average calculation error is 10.2 % under the experimental condition .

结果表明：当周期长度一定时，上下矩形突出部分的水平间距由小变大时，Nu和阻力系数f都是有所减小；

It was found that when the periodicity length is constant , Nu and the friction coefficient / will decrease with the increase of the level distance between the upper and lower rectangular salients .