Mechanics of Turbulence of Multicomponent Gases
Springer Science & Business Media, Feb 28, 2002 - Science - 382 pages
Space exploration and advanced astronomy have dramatically expanded our knowledge of outer space and made it possible to study the indepth mechanisms underlying various natural phenomena caused by complex interaction of physical-chemical and dynamical processes in the universe. Huge breakthroughs in astrophysics and the planetary s- ences have led to increasingly complicated models of such media as giant molecular clouds giving birth to stars, protoplanetary accretion disks associated with the solar system’s formation, planetary atmospheres and circumplanetary space. The creation of these models was promoted by the development of basic approaches in modern - chanics and physics paralleled by the great advancement in the computer sciences. As a result, numerous multidimensional non-stationary problems involving the analysis of evolutionary processes can be investigated using wide-range numerical experiments. Turbulence belongs to the most widespread and, at the same time, the most complicated natural phenomena, related to the origin and development of organized structures (- dies of different scale) at a definite flow regime of fluids in essentially non-linear - drodynamic systems. This is also one of the most complex and intriguing sections of the mechanics of fluids. The direct numerical modeling of turbulent flows encounters large mathematical difficulties, while the development of a general turbulence theory is hardly possible because of the complexity of interacting coherent structures. Three-dimensional non-steady motions arise in such a system under loss of la- nar flow stability defined by the critical value of the Reynolds number.
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accretion disk approach approximation averaged balance equation bulent buoyancy forces characteristic chemical reactions coagulation components constant continuum convection defining relations density derived diffusion coefficients dispersion dissipation rate distribution dust particles dynamic energy dissipation enthalpy entropy equilibrium evolutionary transfer equations expression fluid formula function gas-dust gaseous mixture gases gradient heat and mass heat conductivity coefficient height homogeneous hydrodynamic hydrodynamic equations kinetic energy Kolmogorov layer Marov and Kolesnichenko mass transfer mean motion medium molecular moments multicomponent mixtures multicomponent turbulence non-equilibrium thermodynamics obtain ofthe pair correlations planetary planets pressure problem processes quantity refractive index respective Reynolds stress rheological rheological relations rotation scintillation semi-empirical solar specific spectral Stefan-Maxwell relations stress tensor structure temperature thermohydrodynamic parameters thermosphere tion turbulence models turbulence scale turbulent energy turbulent exchange coefficients turbulent flow turbulent heat flux turbulent motion turbulent transport turbulent viscosity turbulized multicomponent values velocity vertical viscosity volume wave