查询词典 drag force

The effects of magnitude and distribution of the electromagnetic force on the flow around the aerofoil were investigated. The results show that the electromagnetic force with large magnitude and concentrated distribution on the surface of aerofoil is advantageous to eliminate vortex structures and boundary separation, and therefore to increase the lift-drag ratio.

同时对不同电磁力大小和分布影响翼型表面边界层流动的规律进行了探讨，其结果表明，较大的电磁力和更加集中于翼型表面的电磁力分布可以很好地消除涡结构，抑制边界层分离进而达到提高升阻比的效果。

In the analysis of sea ice dynamics, the drag forces, internal ice force, Coriolis' force and ocean tilt effect were calculated and contrasted.

在海冰漂移的动力要素分析中，本文对海冰的风和流拖曳力、海冰内力、科氏力和海面倾斜力等动力要素进行了讨论和对比。

The results show that the camber deformation may play an important role in lift and drag coefficients. The positive camber deformation of the hindwing during the downstroke generates the vertical force, whereas negative camber deformation of the wing during upstroke generates thrust force. The freely flying dragonfly's hindwings play an important role in providing a stable lift force, and the forewings are very important for controlling flight behavior, such as turning, climbing and so on.

建立了自由飞行昆虫运动测量系统，开发了结合条纹投影和昆虫翅膀特征点测量翅膀变形和身体姿态的方法，首次测到了自由飞行昆虫运动翅膀变形和各种相关角度，速度、加速度，身体位置与姿态，通过分析比较直飞和转弯各个运动参数，认为蜻蜓的飞行控制主要由前翅完成，而后翅主要用于产生升力。

Moments of force are small: Because the damper plate weight is light, the damper plate and the guide rail and the rubber packing friction drag is small, therefore causes the handwheel operation moment of force to be small

力矩小：由于闸板重量轻，闸板与导轨及橡胶密封条的摩擦阻力小，故使得手轮操作力矩小

A formula for calculating the minimum underbalance in lower permeability reservoir is obtained by applying a drag force function to testing data.

通过将拖曳力函数用于油田测试数据，提出了确定低渗透地层最小测试压差的公式和方法。

Under experimental results of wax deposition and phase change, the mechanical characteristics of fluids flowing through porous media and the relevant physicochemical problem were all summed up as solving the gas-liquid-solid coupling mathematical model. After considering the phase change action between condensate gas and condensate liquid, wax deposition interlarded with interfacial drag force and capillary pressure engendered in the process of phase change. Numerical simulation results proved that the flow resistance increased and the production output decreased owing to wax deposition.

在蜡沉积变相态渗流实验和渗流数学模型的研究基础上，引入蜡沉积数学模型、考虑毛管力和表面张力的相对渗透率模型等，建立了相应的多孔介质中气－液－固变相态多相流－固耦合渗流数学模型，数值模拟结果表明，蜡沉积可使都分区域孔隙减少，流动阻力增大，不考虑蜡沉积会对产量预测明显偏大，蜡沉积可使产量下降。

Cylinder pile cluster; drag force; bottom bed; local erosion-deposition; arranging format

圆柱桩群；阻力；底床；局部冲淤；排列方式

Themotion equations of a bubble near a plane wall have been established with the lift forceand wall effects on the drag force taken into consideration.

我们在全面考虑壁面对空泡运动粘性阻力和升力影响的基础上，建立了空泡在近壁区内的运动方程，计算结果表明由于壁面的存在将阻滞空泡沿水流方向和垂直水流方向上的运动，即有滞留空泡在空化形成点，减缓空泡逸离空泡发生区的作用。

Firstly, a 2D quasi-single phase liquid turbulent flow model was developed. In this model, interactions between liquid and bubbling gas phase were taken account of, i.e., interphase drag force and the turbulent energy induced by the bubbling gas phase.

首先，建立了以为基础的塔板二维拟单相流模型，其次，建立了三维两相双流体湍流模型，最后，在双流体流体力学模型的基础上，建立了塔板上液相传质模型。

It is shown that the modified model can predict successfully the characteristics of cavitation and the detailed process of the cavitation shedding. Values of n in the modified coefficient are found to have a strong influence on the cavity length, the vapor volume, the lift and drag force, but no significant effect on the frequency distribution of the dynamics around the foil is observed.

通过与实验结果的对比表明，修正后的模型可以更准确地捕捉云状空化区域的空穴形态和空泡脱落的非定常细节；密度函数中指数n的选取对计算所得的空穴长度和升阻力均有影响，然而对流场动力特性的主要频谱分布影响不明显。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。