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。
The stability of the Karman vortex street verified by using point-vortex model when perturbed infinitesimally is however a “slow instability”as shown by the simulation when the street is to be perturbed by finite disturbances.
经典的卡门涡街点涡模型只在一孤立情况下是线性稳定的。
When the cylinder impulsively starts from rest, the early stage flow, flow seperation process and vortex generation, the unsteady evolution of vortex street and the wake flow with bine progress are numerically sedated in detail in this paper, including the generation of symmetric vortex, the α-phenomenon as a result of secondary vortex and Karman vortex street.
本文应用有限差分方法求解涡量－流函数形式的Ｎ－Ｓ方程，数值模拟了圆柱瞬时起动后流动分离，旋涡生成、脱落以及随时间推进涡街产生和长期非定常演化过程，包括对称涡的生成，二次涡形成的α结构及卡门涡街等。
An analysis of the stability of Karman vortex street configurations
关于卡门涡街形状稳定性的一点分析
Experimental Investigation of Perturbation by Karman Vortex-Street in Turbulent Boundary Layer Outer Region
平板湍流边界层外区卡门涡街扰动的实验研究
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 .
Vortex flowmeter on application of the coal gas measurement;
卡门旋涡流量计在焦炉煤气计量中的应用
The expensive shops in a famous arcade near Piccadilly were just opening .
皮卡迪利大街附近的一著名的拱廊街道上，几家高档商店刚刚开门。
The snowflakes were swirling about (the streets).
雪花在 (街道上) 涡旋。
Optimization of the Differential-pressure Based Vortex Flowmeter and Research of Vortex Signal Process;
差压式涡街流量计仪表优化设计与涡街信号处理的研究
The measuring principle and application of vortex flowmeter are introduced.
介绍涡街流量计的测量原理及应用。
Analysis and Measurement of Fluid Flow Using the Characteristics of Vortex Street;
基于涡街特性的流动分析与参数检测
Optimization of Vortex Flow Sensor Based on Numerical Simulation;
基于数值仿真的涡街流量传感器优化
MSP430F149 Chip Applied in Vortex Flow Meter;
MSP430F149单片机在智能涡街流量计中的应用
Study on Performance of Vortex Flow Sensor at Low Flowrates
涡街流量传感器小流量测量性能研究
Research on Digital Vortex Flowmeter with Low Power Consumption Based on MSP430
基于MSP430的低功耗数字涡街流量计研究
Distributing Characteristic of Dynamic Pressure Field of Vortex Flowmeter
涡街流量传感器动态压力场分布特性
Oil-water two-phase flow measurement using vortex flowmeter
利用涡街流量计测量油水两相流流量
Brief on Intelligent Turbine Flowmeters Based HART Communication Protocol
基于HART协议的智能涡街流量计简介
Analysis of Vortex Shedding Flowmeter Measurement System Uncertainty
涡街流量计测量系统不确定度的分析
Smart Local Display of Vortex Flowmeter Based on MSP430
基于MSP430的智能就地显示涡街流量计