查询词典 vortex

To simulate the diffusion of the vortex sheet into the flow field as time goes on, Koumoutsakos' analytical solution is employed, in which an effective vorticity flux is derived and used for solving the vorticity diffusion equation.

而涡片之环量随时间扩散进流场之现象则藉由Koumoutsakos之理论，以边界上之等效涡度通量求解扩散方程式，得解析解后，再将之离散为边界附近之新涡泡。

The no-penetration boundary condition is satisfied by placing a vortex sheet along the boundary, which strength must be adapted to cancel the slip velocity on the boundary induced by all the other flow components.

本论文以Leonard之面积扩散涡漩法及Huang之涡泡分裂融合修正法为基础，开发一满足无滑移、无穿透边界条件之数值模拟工具。

To simulate the diffusion of the vortex sheet into the flow field as time goes on, Koumoutsakos' analytical solution is employed, in which an effective vorticity flux is derived and used for solving the vorticity diffusion equation. The solution is then discretized into blobs (called "-blobs") in the vicinity of the boundary.

而涡片之环量随时间扩散进流场之现象则藉由Koumoutsakos之理论，以边界上之等效涡度通量求解扩散方程式，得解析解后，再将之离散为边界附近之新涡泡。

Moreover, blobs may move too close to the boundary because of advection errors or other numerical errors. It may cause serious fluctuations in evaluating the strength of the vortex sheet. In order to reduce the fluctuations, these near-wall blobs are also manipulated in use of the concept of "residual vorticity". Finally, we apply the so-developed solver to a simulation of the flow past an impulsively started circular cylinder at different Reynolds numbers.

此外既有涡泡也可能因对流或其他数值误差造成过於靠近边界，因此我们也设计一专门处理过於靠近边界涡泡之方法，以其他计算元素取代这些涡泡，降低进入物体内部之环量，进而降低涡片强度计算上的扰动。

The interactions between the shock wave and vortex ring are discussed.

在此基础上，考察了不同出口形状对爆轰波溢出后的外流场的动力学演变规律的影响，分析讨论了涡环与激波的相互作用过程。

Vortex ring generators have been invented that project stable doughnut-shaped clouds of smoke for long distances.

涡环发电机已发明了这一项目稳定的甜甜圈状云烟雾，为长途跋涉。

According to fibers feature, it can be spinned on different systems such as ring spinning and vortex spinning.

根据纤维特点，采用半精梳加工系统、棉纺系统，环锭纺、涡流纺等进行加工。

The computed results also confirm that the streamwise vorticity pairs together with the vortex ring contribute to the formation of the side jet.

数值模拟结果还证实，流动中出现的侧向射流的形成机理要受到流向涡对和涡环的共同作用。

The results of PIV measurements show that there is vortex inside the ring packing when the height and diameter ratio and inclination is high.

测量结果验证了CFD计算结果。由于PIV可以测定瞬时流场，通过分析PIV测定结果发现填料内部存在着周期性变化的涡流。

The PIV measurement results show the properties and structures of the unsteady flow field in which a train of vortex ring s are formed at the sharp edge of the orifice, thus the energy and mass flux are .

通过对射流出口涡环的产生、发展及运动特性的分析，认识到涡环之间相互作用是形成&零质量&射流的流动机理。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。