Structure of turbulent flows of incompressible liquid and turbulent parametrization

Paper studies the problem on the structure of the stationary isotropic homogeneous turbulence of incompressible liquid Re >> 1 activated by force with f0 amplitude, with r0 and τ0 space and time scales, respectively. It is determined that depending on the force value that activates motion of the liquid three radically different turbulent stationary states of liquid may occur and one determined dimensionless parameters ensuring transition from one state to another: γ = f0τ02/r0 and Γ γ4/3 Re. It is shown that at γ << 1, Γ << 1 within the inertial range E(k) ∝ 1/k5/3 Kolmogorov spectrum is formed. E(k) ∝ 1/k2 spectrum region cutting off the Kolmogorov spectrum from the viscous range appears near the viscous range at transition to the turbulent flows resulting from the effect of high amplitude forces. Further increase of f0 force amplitude results in the fact that the whole inertial range turns to be occupied by E(k) ∝ 1/k2 spectrum. Paper presents a physical mechanism explaining restructure of spectra of turbulent pulsations at various γ and Γ. All the results are obtained with no regard for alternation