Vortex Shedding Flow Meters
|
Vortex Shedding Flow Meters Vortex flow meters also know as vortex shedding flowmeters or oscillatory flowmeters, measure the vibrations of the downstream vortexes caused by the barrier placed in a moving stream. The vibrating frequency of vortex shedding can then be related to the velocity of flow. When a fluid flows steadily over an isolated cylindrical solid barrier and the Reynolds number is great than about 50, vortices are shed on the downstream side. The vortices trail behind the cylinder in two rolls, alternatively from the top or the bottom of the cylinder. This vortex trail is call the von Karman vortex street or Karman street after von Karman's 1912 mathematical description of the phenomenon. How Vortex Shedding Flow Meters Work How to Use Vortex Shedding Flow Meters Application Cautions for Vortex Shedding Flow Meters |