One example is adding a coloured transparent liquid-A to a non-coloured transparent liquid-B. Consequently composition inhomogeneities are long living. Mass diffusivity is too slow to completely degrade the inhomogeneities of the Kolmogorov scale. This means that composition inhomogeneities at the Kolmogorov scale prevail. Therefore the Kolmogorov structures are not observable in the composition field of the mixing process, but still may be observable in the respective velocity field.ДЇor mixing processes in liquids the hydrodynamic layer is much thicker than the mass diffusivity layer (ScВ >В 1). This means that composition inhomogeneities on the Kolmogorov scale are degraded once the inhomogeneity has reached the Kolmogorov scale. ДЇor mixing processes in gases the thickness of the hydrodynamic mixing layer and the mass diffusivity mixing layer are approximately equal (Sc = 1).

It physically puts into relation the thickness of a hydrodynamic mixing layer and the thickness of the diffusive mass transfer mixing layer. Is defined as the ratio of momentum diffusivity (kinematic viscosity) and mass diffusivity. (1.1) Sc = kinematic viscosity in m 2 / s mass diffusivity in m 2 / s ,

Viscosity serial number