涡线

若涡线接近水筒中心线，则轨迹接近圆。

If the vortex line is close to the centric line of water tunnel the trace is nearly a circle .

建立了旋翼升力线模型和广义尾迹模型，在计算角迹涡线诱导速度时，采用了快速收效方法。

Both lift line model and generalized wake model are founded in this paper . A method is given for calculating induced velocities by a wake vortex line which results in a rapid convergence .

收缩螺旋涡线诱导速度的快速收敛法

A rapid convergence method of induced velocities by contracted helical vortex lines

这些涡线的自由部分相对于平板成θ角。

The free parts of the vortex lines make an angle θ with the plate .

离散涡线法计算细长翼载荷分布的改进

An improvement in the discrete-vortex method used for calculating the loading distribution on slender delta wings

选择初值迭代求解自由涡线、涡核的强度和位置。

The strength and position of vortical cores and lines can iteratively be got by satisfying boundary conditions .

此外，通过观测近叶片吸力面二维涡线的发展趋势可以判断叶尖复杂流动的发展状态。

Moreover , it is found that the evolution procedure of the near suction surface two-dimensional vortex lines has a close relationship with the rotor tip flows .

平板系用有限条沿弦向分布的和强度不同的马蹄形涡线来代替。

The plate is replaced by a finite number of horseshoe vortex lines which are located along the chord of the plate and which are of different strength .

核自旋晶格弛豫率以及奈特位移的实验结果显示，超导态的电子配对是d波单态配对.d波能隙函数里存在节点，使得准粒子从涡线中心漏到涡线外面。

The temperature dependence of the spin-lattice relaxation rate and the Knight shift indicate d-wave pairing , which brings about the extended quasiparticle states outside the vortex cores .

作为第一次近似，将θ角取为冲角的一半，算出涡线强度的第一次近似值。

The angle θ is initially assumed to be one half of the angle of attack and the first approximate values for the strength of the vortex lines are computed .

螺旋流可分解成轴向流动与强制涡流，是涡线与流线重合的一种特殊流动。

Swirling flow ( or spiral flow ) can be decomposed axial flow and compulsive whirling current . Swirling flow is a sort of special flows matching together vortex line with flow line .

不同初始涡廓线对涡旋自组织影响的初步研究及敏感性试验地理过程的案例表达与组织&以南海区海洋涡旋为例

Preliminary Study and Sensitivity Experiments on the Impact of Different Initial Vortex Profile on Vortex Self-organization ; The Representation and Organizational of Geographical Spatio-temporal Process Case

采用圆渐开线修正涡旋压缩机涡齿型线

Investigation of wrap profile modification using circle involute for scroll compressor

通过对试飞数据的处理，得到了实测涡环边界线以及对应的临界垂直下降率和安全下滑角。

Based on the flight test data , a new practical boundary is obtained , which was almost parallel with the theoretical one , and the critical vertical descent velocity and the angle of safety descent are redefined .

模拟细长翼分离涡的多涡线法改进

An improved multiple LINE-VORTEX method for simulation of separated vortices of slender wings

明确了在大偏度襟翼上展向吹气，产生的集中涡是“肩线涡”，而不是“喷气涡”。

It is found that the flap shoulder vortex is generated over the flap instead of the jet vortex when the spanwise blowing is applied to a flap with large deflection angles .

通过给定物面上对称或非对称的分离线位置，现在提出的算法有效地解决了涡强度与自由涡线位置的迭代匹配问题，首次得到了迎角大到60度的涡流数值解。

With given symmetric or asymmetric separation lines on the body surface , vortex strengths and free vortex locations are solved by an efficient iteration method presented by this paper . The first converged solution at angles of attack up to 60 ° is obtained by using the method .

涡量场特性可以用涡线非常形象地表达出来。

This expression pattern was further conformed by RT-PCR . The characteristics of vortex field can be described visually by vortex line .

用氢气泡法显示了两种大涡，即平板起动涡和细干扰线在圆盘前诱发的大涡的内部流动结构。

The flow structures inside some large vortices were investigated by hydrogen bubble method .

该模型采用圆弧涡元作为基本涡元，并依据自由尾迹涡线确定远尾迹形状以使远尾迹更接近实际和自由。

The model uses the curved vortex elements on the circular arc as the basic discrete elements for trailed filaments and utilizes the free wake extension to form an adaptive far wake downstream .

提出涡函数偶及其梯度的新概念，指出它与涡线、旋度、涡旋强度的关系。

There are three kinds of potential functions in the interaction between helium and titanium .

本文详细讨论了水筒轴中心线的直线涡的运动稳定性，其结论是在除零波数外的任意波数扰动下，该涡线总能保持在轴中心线上，运动是稳定的。

As for vortex line located in centric line of water tunnel its motion stability is analysed in detail and the conclusion is that it can always be kept at centric line of water tunnel for any wavenumber perturbation other than zero wavenumber .