Ekman Number Rotating Viscosity Calculator

Use one coherent SI unit system, physical state, geometry, and documented characteristic scale across every input. Viscosity and rotation describe one fluid state and frame. The displayed definition uses two times angular speed. Confirm whether each property belongs to the fluid, solid, interface, particle, or transported quantity named by the formula. Mixed conventions can produce a plausible number whose physical meaning is wrong.

The ratio compares viscosity with rotational influence; it does not calculate boundary-layer thickness or prove steady balance. A dimensionless group compares selected mechanisms under a stated model; it does not prove a regime, transition, instability, similarity, or safe design. Geometry, boundary conditions, property variation, measurement uncertainty, and the validity range of downstream correlations still require separate review.

No. This educational calculator performs displayed arithmetic on supplied SI values; it is not simulation, experimental validation, a correlation selector, material data, or engineering approval. Geometry, latitude convention, stratification, turbulence, boundaries, transients, and Ekman-layer assumptions require separate review. Retain source values, units, property temperatures, geometry definitions, and uncertainty, then obtain qualified review before using the result for design or safety decisions.