Transition from Laminar to Turbulent Drag in Flow Due to a Vibrating Quartz Fork (Article No. 025302)

Abstract

Flow due to a vibrating quartz fork is studied in gaseous helium and He I, over a wide range of temperatures and pressures. On increasing the driving force applied to the fork, the drag changes from laminar to turbulent.

We characterize this transition by a critical Reynolds number and we explore it in a classical viscous fluid over two decades of the kinematic viscosity.

Keywords

• Transition
• Laminar
• Turbulent
• Vibrating
• Quartz
• Article
• 025302