1、

An experimental research on the performance of a small flow vortex tube is introduced.

本文用实验方法研究了小流量涡流管制冷的特性.

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2、

In numerical stimulation, stress on produce, progress and dissipation of vortex in the flow field.

在数值模拟中, 着重研究流场中涡的的产生 、 发展、耗散过程.

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3、

Spiral ( swirling ) flow is a sort of special and regular vortex movement.

螺旋流是湍流中一种特殊的、规则的涡旋运动.

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4、

The cautions of operations of vortex flow meter in flow measurement of chemical industry are given.

提出了在化工行业的流量测量中使用涡街流量计的注意事项.

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5、

However, for little submergence the flow separates at aft-dome and a weak vortex forms in cavity.

而潜入深度小的喷管,分离点会后移至后封头上,在背壁区后部形成弱旋涡.

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6、

The gas flow in cyclone is mostly tangential flow, which has a regular velocity field, and the radial flow is minimum. The flow field is mainly composed of forced vortex flow and little free vortex flow.

通过研究看出,卧式旋风筒内气流流动主要是切向流动,径向流动最小,并且切向速度有较好的分布规律,主要是以强制涡区为主,自由涡区很小;

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7、

During the stall period, the flow structure in all volute cross sections consists of a single forced vortex at all times. The flow loss is rather great in the center of the forced vortex, which lead to the low total pressure.

在失速周期中,在所有的时刻下蜗壳流道的截面上,流动均形成了一个的旋涡,旋涡中心流动损失较大,总压较小。

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8、

Because of the distinct reducing of the swirl velocity and the instability of the forced vortex itself, the vortex at the volute discharge section breaks down easily, inducing the reverse flow at the center of volute discharge section.

在蜗壳出口直管段由于涡流速度明显减小和旋涡自身的不稳定,在小流量下容易发生破裂,导致蜗壳出口的截面中心区域通流速度均出现逆流,此逆流为压缩机失速特征的表现。

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9、

Random Vortex Method for Two-Dimensional Flow past Bluff Body

钝体绕流的随机涡方法

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10、

Angle Function Method is introduced to fairly fast detect vortex core region in flow field.

提出了一种称为“角度函数”的方法来快速检测流场中的涡核区域。

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11、

Such parameters of flow characteristics are investigated as lift and drag coefficient and vortex shedding frequencies.

计算了圆柱的升阻力系数、尾涡脱落频率等描述绕流问题的主要参量.

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12、

In comparison with these of the straight cascade the blade positively curving reduces the quantity of the critical points, eliminates the upper passage vortex, and transform the closed separated flow of the secondary vortex along the blade tip suction side into the open separated flow.

与直叶栅比较,叶片正弯明显减少了壁面与横截面流场中奇点的数量,消除了上通道涡,并使叶顶吸力边的二次涡分离流动由闭式分离转变为开式分离。

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13、

Simulated flow inside impeller illustrates the tip clearance and corner vortex developing and mixing with main flow through passage.

对叶轮内流动模拟,说明了叶顶泄漏流对主流的作用,以及叶轮内部壁角涡的形成与发展。

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14、

The unsteady phenomena include the shockwave, wake, shedding vortex, endwall vortex, passage vortex and leakage vortex, etc. Periodic flow is observed for each vane passing period.

涡轮级内常见的非定常现象包括:激波、尾迹、脱落涡、壁角涡、通道涡以及泄露涡等。在每个静叶通道内可以观察到周期性的流动。

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15、

The photos of flow visualization show that corner vortex generates and develops near the suction surface of blade/ endwall junction, which forms a triangle region.

流场显示图片表明:叶片吸力面靠近端壁有角涡形成与发展,并存在一个三角形区域;

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16、

From the photos of flow visualization it can be seen that corner vortex is generated and developed near the suction surface of blade/ endwall junction, and forms a triangle region on the suction surface.

从流场显示图片可以观测叶片吸力面靠近端壁的角涡形成与发展,以及吸力面上的三角形区域;

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17、

The results obtained describe the flow structure in the corner between the end-wall and blade suction surface in detail. Besides a passage vortex with in the passage, there exist a shed corner vortex pair and a secondary vortex pair in the corner.

结果表明:叶栅通道内不仅存在通道涡,而且在吸力面与端壁形成的角区内存在一角区脱落涡对和一二次涡对。

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18、

The results show that the non-uniform flow wake induced by secondary motion and vortex always appear in the corner region of casing wall and pressure surface;

研究结果表明:二次流和涡运动导致叶道出口流动尾迹发生于外端壁/压力面角域;

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19、

The results of experimental investigation on the flow field in the vortex arc-plasma reactor by LDA are presented.

本文给出了用激光多普勒测速仪(LDA)测量涡旋式电弧等离子体化学反应器流场的实验研究结果。

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20、

After a brief introduction of the Nernst effect in normal metal, it is pointed out that Nernst effect produced by the vortex flow in the mixed state of type ⅱ superconductors is much larger than that of normal charge carriers.

简要地介绍了通常金属的能斯特(Nernst)效应,指出类超导体在混合态的磁通运动产生的能斯特效应远大于正常载流子的贡献。

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