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- vortex street stability 涡道稳定性
- Can you spot another vortex street in the image? 你能在图中找到另一涡旋列吗?
- A vortex street can often be seen downwind of Cheju Island, Korea. 在此冬季盛行风下,朝鲜的济州岛下游经常出现涡旋列。
- Improving its antivibration performance is a difficult techmical problem which must be solved in the study and application of vortex street flowmeter. 在涡街流量计的研究和应用中，提高其抗振性能是必须解决的技术难题。
- Karman vortex street was observed in the wake of a rough Mat plate at M=2.2.The supersonic vortex flow was investigated by optical methods. 在一块粗糙平板的超音速尾流中(M数2.;2);产生了卡门涡街。用光学方法研究了超音速卡门涡街。
- This paper deals with the mechanism of Karman vortex street and calculation of vibration frequency as well as the exciting force induced by vortex. 本文阐述了卡门涡列的机理,并计算了卡门涡列振动频率及诱发的激振力大小。
- The emission frequency of the Karman vortex street occurred in series from the blades and tongue is varing with the running condition. 将流程泵叶轮叶片和压水室的隔舌看作旋涡发生体,在不同运行工况下在叶片后缘以及隔舌两侧串联发生的卡门涡街的发射频率是不同的。
- It is presented how to successfully simulate the phenomenon of Karman vortex street when fluid passes by vortex flowmeter by using FLUENT software. 摘要运用FLUENT数值仿真软件成功的模拟出流体流经涡街流量传感器时所产生的卡门涡街现象。
- Occurring in gas-liquid two-phase vortex street, the the rule of gas-liquid two-phase Strouhal number are studied in gas-liquid two-phase flow. 在气液两相流中,研究了发生气液两相涡街时,气液两相斯特罗哈数的变化规律。
- The simulating results of NACA0012 airfoil in sub-critical flow and the Karman vortex street over a circular cylinder can demonstrate the validity of this method. 通过NACA0012翼型的亚临界绕流计算和低雷诺数绕圆柱流动的卡门涡阶的模拟说明了本文发展的方法的准确性。
- When Reynolds number is s aller than 200, the vortex street can be co. pletely suppressed by a s all circular cylinder which is placed in the edge of the "dead water region" . 当雷诺数小于大约200的情况下,在圆柱体“死水区”一侧的边沿,放置一个直径很小的控制圆柱体,可以抑制卡门涡街的产生。
- It is found in this work that the Von Karman vortex street could be totally suppressed at low Reynolds number region after adding the control cylinder at proper position. 由实验之结果发现：在锥形圆柱流场之适当位置加入控制圆柱后，在低雷诺数可使其尾流之冯卡门涡街完全消失；
- In this paper, the Strouhal number of the triangle cylinder, occurring in gas-liquid vortex street (the Karmen vortex street), are studied experimentally in horizontal gas-liquid flow. 摘要研究气液两相斯特罗哈数，可为利用气液两相涡街特性测量气液两相流量与组分开辟一种新方法，也可开发出适用于气液两相流体流量等参数测量的新仪表。
- Tested and studied in this paper is the variation relationship of gas liquid two phase Strouhal number when a gas liquid two phase vortex street occurs for two types of T shaped cylinder in a vertically upward gas liquid flow. 试验研究了两种规格的T形柱体在垂直上升气液两相流中发生气液两相涡街时，气液两相斯托拉赫数的变化规律。
- The effect of bathymetry on the characteristics of vortex streets is numerically studied in this paper. 摘要本文中，我们利用数值模式，探讨地形水深对涡流射出之影响。
- The test showed that there are Karman vortex street behind cylinder ,but the rule of shedding frenquency as strouhal number is defferent compared with that the cylinder is put into outflow. 实验结果显示,在平面叶栅风洞内的圆柱体尾流中有类似在外流中的卡门涡街脱落现象,但所对应的斯特劳哈数比外流稍小。
- So the frequency can't be simply calculated by the frequency formula of Von Karman vortex street around cylinder because Karman's formula is independent of hydrofoil's attacking angle. 尾流内存在周期性很好的类似卡门涡列的流动现象，其频率与叶片绕流状况有关，随着叶片入流角增加而增大，且属于低频范畴，因此，不能简单地采用圆柱绕流卡门涡街的频率公式进行计算。
- He beckoned to me from across the street. 他在马路对面向我招手致意。
- Global strategic balance and stability. 全球战略平衡和稳定。
- The street is overarched by ginkgoes. 那条街道给拱形的银杏树遮盖着。
