Результаты поиска по 'modeling course of succession':
Найдено статей: 2
  1. Ushakov A.O., Gandzha T.V., Dmitriev V.M., Molokov P.B.
    Computer model of a perfect-mixing extraction reactor in the format of the component circuits method with non-uniform vector connections
    Computer Research and Modeling, 2024, v. 16, no. 3, pp. 599-614

    The features of the component circuits method (MCC) in modeling chemical-technological systems (CTS) are considered, taking into account its practical significance. The software and algorithmic implementation of which is currently a set of computer modeling programs MARS (Modeling and Automatic Research of Systems). MARS allows the development and analysis of mathematical models with specified experimental parameters. Research and calculations were carried out using a specialized software and hardware complex MARS, which allows the development of mathematical models with specified experimental parameters. In the course of this work, the model of a perfect-mixing reactor was developed in the MARS modeling environment taking into account the physicochemical features of the uranium extraction process in the presence of nitric acid and tributyl phosphate. As results, the curves of changes of the concentration of uranium extracted into the organic phase are presented. The possibility of using MCC for the description and analysis of CTS, including extraction processes, has been confirmed. The use of the obtained results is planned to be used in the development of a virtual laboratory, which will include the main apparatus of the chemical industry, as well as complex technical controlled systems (CTСS) based on them and will allow one to acquire a wide range of professional competencies in working with “digital twins” of real control objects, including gaining initial experience working with the main equipment of the nuclear industry. In addition to the direct applied benefits, it is also assumed that the successful implementation of the domestic complex of computer modeling programs and technologies based on the obtained results will make it possible to find solutions to the problems of organizing national technological sovereignty and import substitution.

    Keywords: mathematical modeling, computational experiment, component circuits method, virtual laboratory, extraction, ideal mixing reactor.
  2. Nemchinova A.V.
    Marks of stochastic determinacy of forest ecosystem autogenous succession in Markov models
    Computer Research and Modeling, 2016, v. 8, no. 2, pp. 255-265

    This article describes a method to model the course of forest ecosystem succession to the climax state by means of a Markov chain. In contrast to traditional methods of forest succession modelling based on changes of vegetation types, several variants of the vertical structure of communities formed by late-successional tree species are taken as the transition states of the model. Durations of succession courses from any stage are not set in absolute time units, but calculated as the average number of steps before reaching the climax in a unified time scale. The regularities of succession courses are revealed in the proper time of forest ecosystems shaping. The evidences are obtained that internal features of the spatial and population structure do stochastically determine the course and the pace of forest succession. The property of developing vegetation of forest communities is defined as an attribute of stochastic determinism in the course of autogenous succession.

    Keywords: modeling course of succession, Markov chain, pace of forest succession, vertical structure of forest communities, stochastic determinism, proper time of forest ecosystem shaping.
    Views (last year): 2. Citations: 2 (RSCI).

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