英语释义

1. the state of a fluid in vortical motion broadly vortical motion

2. a measure of vortical motion especially a vector measure of local rotation in a fluid flow

片语

geostrophic vorticity[气象]

vorticity methods涡强度法

vorticity fluctuation涡量脉动

vorticity forcing涡源强迫

vorticity equation[流] 涡量方程，[流] 涡度方程

curvature vorticity[气象]

vorticity center涡度中心

shearing vorticity[气象]

vorticity path涡度路径

lonic vorticity反气旋涡度

英汉例句

• the force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.

  作用在任意运动物体（系）上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。

• firstly, the toroidal poloidal decomposition for incompressible velocity fields is used to describe the vertical velocity, vorticity and helicity in the three dimensional atmosphere motions.

  本文首先将不可压缩流体速度场的螺-极分解用来描写三维大气运动的垂直速度、涡度和螺度；

• both the pattern and central intensity of the vorticity field have been simulated successfully using the bulk aerodynamic boundary layer and apparent vapor scheme in the model.

  采用总体空气动力学边界层及显式水汽方案的控制试验较成功地模拟出了气旋涡度场的型式和中心强度。

• positive vorticity region was consistent with the precipitation area, whose center was a sign of the heavy rain center.

  正涡度区域与降水范围一致，其中心对暴雨中心落区具有指示意义；

• the kinematic vorticity number (w_k), which is introduced into geology from fluid dynamics, is used to measure the degree of non-coaxiality of strain.

  运动学涡度是从流体力学引入到地质学当中的，主要应用于应变非共轴程度的确定。

• it is found by the calculations that under inverse pressure gradient the averaged vorticity in boundary layer is somewhat transplanted to the wall.

  计算结果表明，递压梯度下的平均速度剖面中出现涡量向壁面的迁移现象。

• full layer integrations suggest transfers of positive vorticity from subsynoptic scale systems to synoptic ones.

  整层积分的结果是次天气尺度系统向天气尺度系统提供正涡度。

• it is shown that to the north of a heating region, although there is no diabatic heating, there still exists deep negative vorticity forcing due to the horizontal inhomogeneous in the westerly flow.

  结果表明加热区以北，虽然非绝热加热消失，但存在加热的水平梯度在西风环流的背景下在高低层造成深厚的负涡度强迫。

• based on the outputs of the model, the cause of the mesoscale cyclogenesis on the lower troposphere has been investigated in terms of the potential vorticity principle.

  用模式输出资料，根据湿位涡理论分析了这次暴雨过程中对流层低层的中尺度低涡及地面气旋发生发展的原因。

• the results have shown that (1) ltc would keep its positive vorticity a stronger value in lower level and decay slowly while stc would decrease quickly after landfall.

  结果表明：（1）ltc在陆上长久维持过程中，其低层正涡度衰减缓慢并保持一定强度。stc登陆后正涡度减弱较快。

• the recirculation zone length, contraction coefficient and vorticity as well as the variety of main flow and the intense fluctuation of recirculation zone and contraction coefficient were studied.

  研究了阀门后时均情况下的回流区长度、收缩系数、涡量场以及主流的变化情况和回流区、收缩系数的变化特性。

• the strongest vertical motion, positive vorticity and upper level divergence and low level convergence were observed in explosive developmental process of the cyclones.

  在气旋爆发性发展过程中，上升运动、正涡度以及高空辐散和低空辐合的散度场皆达到最强。

• based on the complete form of vertical vorticity tendency equation, the effect of spatially non-uniform heating on the formation and variation of subtropical high is discussed.

  运用全型垂直涡度倾向方程理论，研究了空间非绝热加热在垂直方向的变化对副高强度和位置变异的影响。

• the coupling of cyclonic vorticity column and ascending motion as well as deep moist tongue is one of the important dynamical mechanisms for the formation of the snowstorm.

  气旋性涡柱和上升运动及深厚湿舌的耦合是暴雪形成的一种重要动力机制。

• a quasi-geostrophic barotropic vorticity equation model is used to simulate the influences of topographic forcing and land friction on landfall tropical cyclone track and intensity.

  采用準地转正压涡度方程模式，对地形强迫和陆地摩擦作用下登陆热带气旋的路径和强度进行了模拟研究。

• then, the vector potential and vorticity equations and the method of the false transient are applied to compute the three-dimensional viscous natural convection.

  然后利用矢量势和涡方程以及人工瞬变方法计算封闭腔中水的三维粘性自然对流。

• the interaction among the shearing basic flow, cyclonic vortex, and multiple vorticity lumps can change the tendency.

  切变基流、低涡和多个涡块的相互作用，可以改变下降的趋势。

• at the maintaining stage, vorticity and enstrophy of barotropic and baroclinic reach maximum when blocking has built and stayed at the blocking field.

  在维持阶段，正压和斜压涡度和涡度拟能的增长达到最大值，阻塞形势建立并维持在阻塞区域内；

• vorticity and kelvin's theorem.

  涡度和凯尔文法则。