ON THE SUPREMACY OF VISCOSITY IN THE CONTROL OF TURBULENT FLUID MOTION

摘要

Even for Reynolds numbers not small, the dynamic effects including the dynamic velocity terms and the pressure terms enumerated in the Navier Stokes equation exert small average effects on the turbulence features when compared with the effects of viscosity.nThis new finding points to the linearization of the turbulence problem. Non-linear effects of the statistical deviations from the random distribution, however, are not insignificant.nThe theory is applied to the determination of the ratio of the two intensities of turbulence mixing, the one being the shear mixing and the other the energy diffusion mixing.