Von Kármán Constant
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High Quality Content by WIKIPEDIA articles! In fluid dynamics, the Von Kármán constant (or Kármán constant), named for Theodore von Kármán, is a dimensionless constant describing the logarithmic velocity profile of a turbulent fluid flow near a boundary with a no-slip condition. The equation for such boundary layer flow profiles is:where u is the mean flow velocity at height z above the boundary. The roughness height (also known as roughness length) z0 is where u appears to go to zero. Further is the von Kármán constant (typically the value 0.41 is used), and u_star is the friction vel...
High Quality Content by WIKIPEDIA articles! In fluid dynamics, the Von Kármán constant (or Kármán constant), named for Theodore von Kármán, is a dimensionless constant describing the logarithmic velocity profile of a turbulent fluid flow near a boundary with a no-slip condition. The equation for such boundary layer flow profiles is:where u is the mean flow velocity at height z above the boundary. The roughness height (also known as roughness length) z0 is where u appears to go to zero. Further is the von Kármán constant (typically the value 0.41 is used), and u_star is the friction velocity which depends on the shear stress w at the boundary of the flow:with the fluid density.
