vortex velocity

With different board positions, it is not in the light of free vortex that the through-flow velocity distributes, and the secondary flow velocities have similar distributions.

当两挡板开度变化时，蜗壳流道截面上通流速度的分布不同于自由涡流规律，二次流速度分量分布形态类似。

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According to the flow structures identified from instantaneous velocity fields, the vortex street is created at the airfoil tail region.

在测量范围内，翼型的尾缘处是近尾迹涡街的形成区；

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Formulations of the lift and the thrust are derived based on the three-dimensional unsteady vortex lattice method, and the effect on instantaneous shape velocity is analyzed.

推导了新的基于空间非定常涡格法的扑翼飞行器升力和推力的计算公式，然后分析了瞬时形状速度对它们的影响。

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This paper studied the velocity field of a forward swept axial-flow fan with no casing configuration by means of PIV technology, and a tip vortex phenomenon is observed.

本文利用对开式前缘弯掠轴流风扇进行PIV实验，捕捉到了开式轴流风扇的叶尖涡。

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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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Abstract In this paper, the 3 D velocity fields in the furnaces' arch area for a conventional stock boiler and the model with dipole vortex device were measured by the hot wire aerometer.

用热线风速仪测量了常规层燃炉炉膛和带有偶极子涡流器的炉膛模型拱区的三维速度场。

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In this paper, the subsonic unsteady aerodynamic performance of a noncoplanar wing-tail combination can be computed on condition that the velocity potential function of unsteady vortex ring is taken as an elementary solution and the method of time history ( MTH) is used.

本文以非定常涡环速度势函数为基本解，应用时间历程方法，计算非共面机一尾翼组合体的非定常气动力性能。

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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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Four tangential velocity distributions considered are Rankine vortex, forced vortex, free vortex and constant angle vortex.

旋流器出口的四种切向速度分布为：Rankine涡、强迫涡、自由涡和常数角涡。

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A semitheoretical modeling to calculate pressure drop and exponent of vortex velocity profile is deduced.

建立了计算旋风分离器压降及速度分布指数的通用计算式.

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