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- The vortices, known as von Karman vortices, appear when the air flow is disturbed by an object standing in the way. 这些涡旋称为冯卡门涡旋,一般在气流受到障碍物扰乱情况下出现。
- In this paper,we studied the Karman vortices after stay vane and guide vane for hydraulic turbines. 本文对水轮机固定导叶和活动导叶后卡门涡进行了系统的研究。
- There are horse shoe vortex around spur dikes and Karman vortices behind spur dikes. 发现在丁坝的上游会形成马蹄涡 ;在丁坝的背风面会形成卡门涡 .
- The vortices shedding frequency calculation model proposed by this paper can be used to predict the shedding frequency of the Karman vortices for hydraulic turbines design. 本文建立的水轮机固定导叶和活动导叶后卡门涡频率预估模型,可在设计阶段进行叶片绕流卡门涡频率的预估。
- The high temperature vortex flow - sensor is a sensitive part which is made of high temperature piezoelectric ceramics with Karman vortex theory. 高温涡街流量传感器是根据卡门涡街理论,采用高温压电陶瓷制成的敏感器件,本传感器使用PNC型改性偏铌酸铅高温压电陶瓷。
- 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。
- 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。
- Steel tube transmission tower aeolian vibration is lateral motions of some circular tower members induced by Karman vortex under relatively low wind speed. 输电钢管塔的微风振动,是其部分圆截面构件在较低风速时发生的由卡门涡街引起的横风向运动。
- 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；
- The relationship between the non-dimensional drag coefficient of SMA plate face and time is presented, and the pressure distribution on and around the SMA plate surface as well as the Karman vortex configuration in the wake at a certain time are given. 给出了形状记忆合金薄板表面的流体无量纲阻力系数随时间的变化关系，同时给出了某一时刻薄板表面及其周边的压力分布和薄板尾迹中的卡门涡街形态。
- 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。
- This paper puts enough emphasis on the similarity in analyzing the mean velocity over a long period of time (where the long period is referred to as a cycle of the Karman Vortex Shedding). 从相似性的角度，对流速在尾流摆动一个周期内的平均值进行了分析。
- KARMAN VAFM Karman Vortices Air Flow Meter 卡门式空气流量计
- The flow fields in the blood pump show that a series of vortexes just like Karman vortex street occur downstream the impeller, making the flow unsteady. 计算了血泵内的流场分布，发现由于叶轮的高速旋转，叶轮后出现了类似于卡门涡街的旋涡，造成流动不稳定。
- karman vortex(Karman vortex street) 卡门涡流（卡门涡街）
- Keywords Column;disabler;a load of the wind;Karman vortex street; 塔器;失效;风载荷;卡曼涡街;
