When this value is typically on the order of 40-100, a von Karman street can form, though it disappears when this value exceeds 400.
The Colebrook equation relates a friction coefficient raised to the negative one-half power to the negative log of 2.51 over this quantity times that friction coefficient to the one-half. When this value is typically on the order of 40-100, a von Karman street can form, though it disappears when this value exceeds 400. The Moody diagram plots this quantity on the x-axis against the Darcy factor, which can then be approximated by the Hagen-Poiseuille law using this quantity. For a particle, the frequency of vortex shedding is related to a similar quantity named for (*) Strouhal. Given by velocity times characteristic length divided by kinematic viscosity or more generally as a ratio of inertial to viscous forces, high values of this quantity are charactistic in the formation of vortices and eddies. For 10 points, name this dimenensionless number which is high in the turbulent regime and low for laminar flow.
The Colebrook equation relates a friction coefficient raised to the negative one-half power to the negative log of 2.51 over this quantity times that friction coefficient to the one-half.
Reynolds number