Problems of Modelling of Processes Маss Transfer and Coagulation in Protoplanetary Gas-Dusty Cloud.
Abstract:
With reference to mathematical modelling of evolution protoplanetary cloud the hydrodynamic aspects of the theory of a joint course of processes masstransfer and coagulation in a two-phase medium are considered if there is a shift turbulence in differential- rotated the gas dusty disk and polydispersibility of rigid particles, weighed in a carrying stream. The defining relations for diffusion streams of particles of different sizes in the equations of a turbulent diffusion in a gravitational field circumscribing convective transposition, turbulent intermixing and settling to a central plane disk of motes, and also their growth are deduced at coagulation. The semiempirical method of calculation of factors of turbulent viscosity and turbulent diffusion for particles of various sorts taking into account influence of boomerang effects of transposition of a dust to evolution of turbulence in the disk and inertial differences of rigid particles is developed. With the purpose of a strict solution of a problem mutual influence of processes of turbulent intermixing and the kinetics of coagulation at shaping of the subdisk are analyzed possible mechanisms of gravitational, turbulent and electrical coagulation in a cloud and the parametrical method of moment of a solution intergodifferential of the equation coagulation of Smoluhovsky for a cumulative distribution function of particles on sizes is considered which is founded on a membership of a required cumulative distribution function to a defined parametrical class of distributions.
Publication language:russian
Research direction:
Mathematical modelling in actual problems of science and technics
