Информационная система "Конференции"

Abstracts

Universal software of physic-chemical modelling natural and technological processes "Selector" (Karpov, 1981; Chudnenko, 2007) it is based on application of minimization methods of thermodynamic potentials in the formulation of convex programming.

Using a decopositional method, any process in the nature (as well as in technological systems) can be spatially submitted as the cooperating connected reservoirs incorporated into megasystems (Chudnenko et. al., 1987). Initial preconditions of models association of dynamics and chemical interaction in the megasystems connected among themselves and an environment by direct, inverse and through streams of substance and energy, are the following positions:

- megasystem reservoirs are characterized fast (concerning speeds of substance conduction between them) hashing and achievement of balance within the limits of all or the allocated parts of their volume;

- reservoirs depending on modelled conditions can have various independent factors of a condition and, hence, have an opportunity of minimization of corresponding thermodynamic potentials;

- the mass conduction between reservoirs it is carried out as streams of physically individualized phases: liquid, gaseous and solid. Each stream has the speed of conduction which can depend on weight of a reservoir-source and its structure, changing on each step of dynamic process;

- inside any reservoir probably production or absorption of dependent components, phases and-or all or separate independent components, and also change Т-Р conditions on time, caused both external, and internal factors of a condition (mixture, warming up, isochoric heating) in everyone the system-reservoir;

- streams of substance and the energy, connecting megasystem with an environment (with external managing parameters), set an optimum highway of its evolution or bring disturbing effect.

The researcher has an opportunity extremely flexibly to create kinds of streams and to form structure of mobile phases group that has important value in construction of various models of open systems dynamic interaction.

Modelling is made on two-level algorithm: at the bottom level it is settled invoice equilibrium in reservoirs, and on top - those changes in megasystem which functionally depend on macrokinetic and dynamic parameters are calculated. On each step of iterative algorithm reception of the information on a condition of reservoirs in their nonequilibrium evolution controlled by set streams of substance and energy which characteristics can change during imitating modelling is made.

The principle of the models construction which are included in uniform megasystem realized in the software, allows to organize calculation, processing and accumulation of necessary given physical and chemical characteristics of natural and technological objects at various stages of investigated processes in the existential representation, standard in GIS appendices. Thus, software "Selector" can be considered as the specialized software being a compound part of preparation of the existential data for universal full-function GIS general purpose.

Note. Abstracts are published in author's edition

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