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spiral point
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  “spiral point”译为未确定词的双语例句
     Some new phenomena are discovered in this flow through the simulation, such as the bifurcation and mergence of vortices in the separation region ahead of blunt fin, the existence of secondary separation and secondary vortex, multiple vortices structure and so on. By theoretical analysing, we obtain a new conclusion that if the center of vortex is an unstable spiral point or limiting circle exists near the vortex center, the flow field is unsteady.
     消晰地显示了分离区中的旋涡结构,发现流场中会出现二次分离涡,并从理论上分析了流场对称面涡心形态与非定常的关系,得到了涡心为不稳定螺旋点或出现极限环是非定常流动特征的新结论。
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     This model indicates that there are three possible types of equilibrium point in the phase space during the evolution of the rock mass system, i.e., spiral point and improper point and saddle point.
     Ruina单变量摩擦定律基础上建立的岩体系统分岔模型 ,分析了在实践中遇到的问题 ,结果表明边坡岩体系统在演化过程中会出现三个奇点类型 ,即焦点、结点及鞍点。
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  相似匹配句对
     The Design Point of Spiral Mandrel Blown—film Die
     吹塑薄膜用螺旋芯棒机头的设计要点
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     Tool Point Track Calculation for the Spiral Machining of the Blade
     叶片螺旋铣加工刀位计算研究
短句来源
     Point of view
     观点
短句来源
     Extreme Point of f(x) and f~n(x)
     连续函数f(x)与{f(x)}~n的极值
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     (3)the spiral;
     (3)螺旋型;
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  spiral point
In particular these stable states consist of a focus (spiral point) and a limit cycle separated from each other in the phase plane by an unstable limit cycle, all of which are associated with the single community equilibrium point of the system.
      
These stable states consist of a focus (spiral point) and a limit cycle, separated from each other in the phase plane by an unstable limit cycle.
      
The goal of this study is to expand the ECT-based oblique cutting approach to model the Ti drilling using the spiral point drill.
      
They are averages for all pixels within a 200 km radius centered at the spiral point; this averaging was done to improve the signal-to-noise ratio.
      
In this paper, the spiral point drill geometry is introduced first.
      
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The fundamental principle of the surface oil flow visualization technique is discussed in this paper. According to this principle, it can be concluded that the skin-friction-line patterns on the wall is visualized by the surface oil flow picture. The local behavior of the surface oil flow patterns is analyzed with phase plane theory of ordinary differential equations. Also the surface oil flow patterns are locally classified. Finally, connection behaviors of the spiral/saddle points in the oil flow...

The fundamental principle of the surface oil flow visualization technique is discussed in this paper. According to this principle, it can be concluded that the skin-friction-line patterns on the wall is visualized by the surface oil flow picture. The local behavior of the surface oil flow patterns is analyzed with phase plane theory of ordinary differential equations. Also the surface oil flow patterns are locally classified. Finally, connection behaviors of the spiral/saddle points in the oil flow pictures are discussed with many experimentai results of the oil flow patterns. Spiral point in the oil flow pictures must be accompanied by saddle point and physical explanation is also given in this paper.

本文概括了油流显示技术的基本原理,并通过实验证明油流流线实际上是壁面摩擦应力线的反映。在此基础上利用微分方程相平面理论分析表面油流谱的局部特性和对流谱局部地进行分类。本文以大量的实验油流谱图画,探讨了油流谱中螺旋点与鞍点的连接特性,提出了这种流谱特性与由螺旋点发出的旋涡这一流动现象之间存在物理上的内涵关系。

The starting separation on the slender bodies was investigated at the moderate angles of attack. The surface separation patterns of the slender bodies with different nose shape were visualized by using the surface oil flow technique. The starting separation behavior has been examined. In the present experiment the open separation was observed, and it seems that the open separation may start at an ordinary point. In addition, the spiral point at which a nose vortex creates or ends was also observed. It...

The starting separation on the slender bodies was investigated at the moderate angles of attack. The surface separation patterns of the slender bodies with different nose shape were visualized by using the surface oil flow technique. The starting separation behavior has been examined. In the present experiment the open separation was observed, and it seems that the open separation may start at an ordinary point. In addition, the spiral point at which a nose vortex creates or ends was also observed. It appears that the spiral point may be the starting point of the closed separation, and the starting point of the open separation with a singuarlity point either.

本文实验研究了细长体模型在中等迎角下的初始分离问题。观察了不同头部形状的细长体在不同迎角下的分离流态。考察并分析了分离起始点的性质。观察到开式分离的存在,实验结果分析认为开式分离可以起始于正常点。此外,在钝头和尖头模型上都出现了螺旋点形式的头部涡。它们或是闭式分离的起始点,或是奇点型开式分离的起始点。

The shock wave and turbulent boundary layer interaction induced by flat-faced blunt fin mounted on a flat plate is numerically studied. The calculation results display "A" shock wave structure generated by the impingement of separated shock with the bow shock. Some new phenomena are discovered in this flow through the simulation, such as the bifurcation and mergence of vortices in the separation region ahead of blunt fin, the existence of secondary separation and secondary vortex, multiple vortices structure...

The shock wave and turbulent boundary layer interaction induced by flat-faced blunt fin mounted on a flat plate is numerically studied. The calculation results display "A" shock wave structure generated by the impingement of separated shock with the bow shock. Some new phenomena are discovered in this flow through the simulation, such as the bifurcation and mergence of vortices in the separation region ahead of blunt fin, the existence of secondary separation and secondary vortex, multiple vortices structure and so on. By theoretical analysing, we obtain a new conclusion that if the center of vortex is an unstable spiral point or limiting circle exists near the vortex center, the flow field is unsteady.

数值研究了平板方舵激波-湍流边界层干扰流场。模拟出了分离激波与弓型激波砬撞后形成的“λ”激波结构;消晰地显示了分离区中的旋涡结构,发现流场中会出现二次分离涡,并从理论上分析了流场对称面涡心形态与非定常的关系,得到了涡心为不稳定螺旋点或出现极限环是非定常流动特征的新结论。

 
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