他盯着看她指尖上的涡纹和流纹。
概述旋转架构下的动量和涡度方程。
Recapped the momentum and vorticity equations in the rotating frame.
因此,涡喷发动机更适合更高速度的飞行。
多涡,多涡龙卷风来了。
最近开始应用的是一种改进的测量方法,所谓的涡度相关法。
An improved measuring method, the so-called eddy covariance method, recently became available.
通过初步分析,提出了一个统一的涡系干扰模型。
Through analyzing, a model of vortex interaction is produced.
本文研究用有限元法计算桥梁涡激振动的时程响应。
This paper studies the calculation of vortex-induced responses of Bridges by finite element models.
研究者相信,这源于水面平滑了飞鱼迎面的风涡,降低了阻力。
This, the researchers believe, is caused by the surface of the water smoothing out a vortex of air coming off the flying fish and reducing drag.
本文数值模拟了多涡结构在边界层中的非线性演化过程。
The evolution of vortexes in the boundary layer are numerically simulated.
结果表明:粘性耗散与塔架效应是引起尾涡变形的主要原因。
The result shows that viscidity dissipation and tower effect are main reasons of wake eddy distortion.
因此,南海环流的多涡结构与中尺度波动之间存在着一定的联系。
Thus, there exist some relationship between the multi-eddy structure of the South China Sea circulation and mesoscale fluctuation.
模式模拟结果展现了南海流场的季节特征,在模式分辨率下表现出了多涡结构。
The simulated results show the seasonal characteristics and multi-eddy structure of the South China Sea current field.
节段模型风洞试验是研究涡激共振风速锁定范围和最大振动幅值的一种重要手段。
Wind tunnel test of sectional model is an important means for determining lock-in region of wind speed and maximal amplitude of vortex-excited resonance.
迎角、旋成体的外形,尤其是头部的几何形状是细长前体出现非对称涡的关键因素。
Angle of attack and nose shape of bodies are key factors that asymmetric vortex occurs over slender bodies.
通过节段的静力和弹簧悬挂动力试验,对H型吊杆的驰振和涡激振动性能进行分析。
On the basis of static aerodynamic force tests and dynamic response tests, the galloping and (vortex-induced) oscillation performances of H-shaped booms were investigated.
利用涡结构对光波通过高速流场的光学传输特性进行建模,就必须进行涡结构的识别。
It's necessary to recognize the different vortices, when aero-optical distortion caused by hypersonic flow is studied using vortex structure as the turbulence model.
采用圆柱刚性尾涡模型,并作高效近似处理,几个算例表明,计算值与实验值相符合。
Cylinder rigid wake model has been adopted and the approximate treat in high efficiency. The results carried out for examples shows good agreement with experiments value.
并且当漩涡脱落频率与杆件的固有频率接近时,杆件会产生漩涡脱落共振或称涡激共振。
Besides, in case the vortex shedding frequency is equal to a vibration frequency of structure, the rod will occur the vortex shedding resonance or called vortex resonance.
结果表明,南沙南部海域不仅存在多涡结构,而且此多涡结构还存在明显的季节性变化。
It is shown from the computed results that there is a multi-eddy structure in the southern south China sea, and there are obvious seasonal variations in the multi-eddy structure.
本文用等熵位涡(IPV)图分析了1983年1月3—8日东亚寒潮过程的动力学特征。
The dynamical characteristics of a cold wave in southeastern Asia during 3-8 January1983 were analysed with isentropic potential vorticity (IPV) charts.
而交流电所产生的电磁力对于绕流涡街、升力、阻力的控制作用,则与所使用的频率有关。
The control effect of electromagnetic force on cylinder wake, lift force and drag force , which was caused by alternating current, is related to its frequency.
此外,所有这些涡动的电子并不能解释为什么某种神经构造造成了我们看到了蓝色而不是红色。
Furthermore, all the whirling electrons cannot explain why a certain neuronal configuration results in our seeing blue rather than red.
应用升力面理论涡格法和面元法,建立了拖式吊舱推进器非定常水动力性能的数值计算方法。
Based on potential flow theory, a numerical method is proposed for predicting the steady and unsteady hydrodynamic performances of puller type podded propulsors.
当铝盘转动的时候,铝盘靠近磁片从而产生“涡电流”,这种涡电流就对线杯产生了刹车作用。
Well, when the aluminum spool is rotating, the closeness of the aluminum to the magnets creates what's called an "eddy current," and this eddy current creates the braking effect on the spool.
用等熵位涡(IPV)图分析了1983年1月8—10日侵入青藏高原的一次较强冷空气过程。
A strong cold wave entering Qinghai-Xizang Plateau during 8-10 January of 1983 is analys. Ed by the isentropic potential vorticity (IPV) maps.
首先从预定的广义尾流入手,并引入尖涡涡核作用的半经验修正,对旋翼的自由尾流进行计算分析。
Beginning with the prescribed wake model, a Semi Empirical Correction for the vortex core effect on rotor wake is made and free wake calculation is carried out.
离岸远些,茂盛的浮游生物在海水中形成碧绿色的涡状形,这就是海洋生物生产力触发致命喷发的证据。
Offshore, a phytoplankton bloom forms a bright green swirl in the ocean water, proof of the productivity that triggers the deadly eruptions.
离岸远些,茂盛的浮游生物在海水中形成碧绿色的涡状形,这就是海洋生物生产力触发致命喷发的证据。
Offshore, a phytoplankton bloom forms a bright green swirl in the ocean water, proof of the productivity that triggers the deadly eruptions.
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