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2024 International Russian Automation Conference, RusAutoCon 2024

作者： Antipina, Evgenia Mustafina, Svetlana Antipin, Andrev Ufa University of Science and Technology Department of Scientific Research and Development Ufa Russia Ufa University of Science and Technology Department of Mathematical Modeling Ufa Russia Ufa University of Science and Technology Department of Applied Informatics and Programming Ufa Russia

The paper is devoted to the development of a genetic algorithm for finding the optimal values of control parameters of the ethylene oligomerization process. The formulation of the problem of optimal control of the ethylene oligomerization process is given. The control parameters are temperature and reaction duration, the values of which are subject to constraints. It is proposed to search for the solution of the formulated problems using a genetic algorithm with real coding. The principle of operation of genetic algorithms is based on the imitation of the processes of evolution of living nature. It includes cyclic application of selection, crossing, mutation and renewal operations to a population of individuals. For each of the problems under consideration the method of representation of the mathematical analog of the population, on the basis of which the solution is searched, is described. A step-by-step genetic algorithm for solving the formulated optimal control problems is given. A computational experiment is carried out, as a result of which the optimal reaction temperature and process duration, at which the target functional takes the largest value, are calculated. © 2024 IEEE.

关键词： Genetic algorithms

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Evolutionary Algorithm for Calculating the Optimal Temperature Regime of the Catalytic Process 5

Evolutionary Algorithm for Calculating the Optimal Temperatu...

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5th International Conference on Control Systems, Mathematical Modeling, Automation and Energy Efficiency, SUMMA 2023

作者： Antipina, Evgenia Mustafina, Svetlana Antipin, Andrey Ufa University of Science and Technology Department of Scientific Research Ufa Russia Ufa University of Science and Technology Faculty of Mathematics and Information Technologies Ufa Russia Sterlitamak Branch of Ufa University of Science and Technology Department of Applied Informatics and Programming Sterlitamak Russia

ISBN: (纸本)9798350309126

The paper formulates an algorithm for searching the optimal temperature regime of the catalytic process in an ideal mixing reactor. The problem of optimal control of the catalytic process is formulated in a general form. To find its numerical solution, an algorithm based on the method of differential evolution is described. The algorithm allows to obtain an approximate solution of the optimization problem in a time acceptable from the practical point of view. A computational experiment for the dimerization process of alphamethylstyrene is carried out. The optimal temperature profile for achieving the maximum yield of reaction products - linear dimers - is obtained. © 2023 IEEE.

关键词： Evolutionary algorithms

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Optimization of Ethylene Oligomerization Process Based on Genetic Algorithms

Optimization of Ethylene Oligomerization Process Based on Ge...

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International Russian Automation Conference (RusAutoCon)

作者： Evgenia Antipina Svetlana Mustafina Andrev Antipin Department of Scientific Research and Development Ufa University of Science and Technology Ufa Russia Department of Mathematical Modeling Ufa University of Science and Technology Ufa Russia Department of Applied Informatics and Programming Ufa University of Science and Technology Ufa Russia

ISBN: (数字)9798350349818

ISBN: (纸本)9798350349825

关键词： Software packages Catalysts Software algorithms Process control Optimal control Search problems Encoding Temperature control Optimization Genetic algorithms

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Evaluating carbon cap and trade policy effects on a multi-period bi-objective closed-loop supply chain in retail management under mixed uncertainty: Towards greener horizons

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Expert Systems with Applications 2024年 250卷

作者： Bhunia, Satyajit Das, Soumen Kumar Jablonsky, Josef Roy, Sankar Kumar Department of Pure and Applied Science Midnapore City College Kuturia West Bengal Bhadutala721129 India Department of Industrial Management National Taiwan University of Science and Technology Taipei Taiwan Department of Econometrics Faculty of Informatics and Statistics Prague University of Economics and Business Praha 3 Prague Czech Republic Department of Applied Mathematics with Oceanology and Computer Programming Vidyasagar University West Bengal Midnapore721102 India

In response to the growing imperative of addressing environmental concerns and aligning with governmental regulations in supply chain management, this study navigates the optimization landscape of closed-loop supply chains through the lens of carbon cap and trade policy. The optimization model aims to account for the impact of consumer demands, distribution networks, and retail operations on the overall closed-loop supply chain dynamics. The innovative approach introduces an optimization model designed to grapple with the challenges posed by imprecise information within an intuitionistic type-2 fuzzy framework. The bi-objective mixed-integer model integrates pivotal objectives, including carbon emissions reduction, total cost minimization, and trade policy compliance. For a nuanced comprehension of the proposed model, we present three numerical examples, offering clarity on its complexities. Following this, a sensitivity analysis visually depicts the impact of fluctuations in demand and capacity on the defined objective functions. Furthermore, these conclusions unveil promising avenues for future research and exploration within the ambit of this study. © 2024 Elsevier Ltd

关键词： Multiobjective optimization

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Evolutionary Algorithm for Calculating the Optimal Temperature Regime of the Catalytic Process

Evolutionary Algorithm for Calculating the Optimal Temperatu...

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International Conference on Control Systems, Mathematical Modelling, Automation and Energy Efficiency (SUMMA)

作者： Evgenia Antipina Svetlana Mustafina Andrey Antipin Department of Scientific Research Ufa University of Science and Technology Ufa Russia Faculty of Mathematics and Information Technologies Ufa University of Science and Technology Ufa Russia Department of Applied Informatics and Programming Sterlitamak Branch of Ufa University of Science and Technology Sterlitamak Russia

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RETRACTED ARTICLE: Development of a new innovative technological process for continuous methane fermentation in a three-stage biogas plant

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Biomass Conversion and Biorefinery 2023年第22期14卷 29219-29219页

作者： Baizharikova, Marina Tlebayeva, Gulmira Tlebayev, Manat Beksultanov, Zhenish Tazhiyeva, Rysty Department of Applied Informatics and Programming M.Kh. Dulaty Taraz Regional University Taraz Republic of Kazakhstan Department of Jurisprudence Abai Kazakh National Pedagogical University Almaty Republic of Kazakhstan Department of Applied Informatics I. Arabaev Kyrgyz State University Bishkek Kyrgyz Republic

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Flow modeling of multi-phase submerged jet with hydrate formation consideration in an oil emulsion

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AIP Conference Proceedings 2024年第1期3183卷

作者： Svetlana R. Kildibaeva Emil I. Kharisov Elina E. Suyargulova Scientific and innovative management Sterlitamak branch of Bashkir State University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia Applied Informatics and Programming Department Sterlitamak branch of Bashkir State University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia

The paper considers a mathematical model of bubble migration in oil emulsion taking into account hydrate formation. The relevance of the problem is related to the extension of the theory describing various options of oil and gas spills that occur during deep-water hydrocarbon extraction at the bottom of the world ocean. The intensity of hydrate formation has been estimated for the case of joint migration of oil droplets and gas bubbles and migration of bubbles in an oil emulsion. Dependencies of mass of hydrate formed, jet temperature and radii of gas and hydrate components for two limiting cases are obtained.

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Conduction of a Laboratory Experiment with the Goal of Researching Submerged Flow Peculiarities

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IOP Conference Series: Earth and Environmental Science 2022年第4期988卷

作者： S R Kildibaeva I K Gimaltdinov E I Kharisov Applied Informatics and Programming Department Sterlitamak branch of Bashkir state University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia The Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

In connection with the decreasing hydrocarbon reserves on land, the interest of researchers in new alternative methods of hydrocarbon production is growing. One of the actively developing areas is the production of hydrocarbons from deep-water deposits, in connection with which the share of developed deposits in the water area of the World Ocean is growing every year. However, this production method is not completely safe, since any damage to the production structure can lead to leakage of hydrocarbons. In this case, hydrocarbons are distributed in the form of a submerged jet. Predicting the behavior of submerged jets, calculating their trajectories and thermophysical parameters is important in the elimination of leakage. The article discusses an experimental study of a submerged jet. The results of the experiment will make it possible to verify the mathematical model describing the propagation of a submerged jet. The experiment was carried out to study the trajectory of the jet and its temperature. This paper presents the results on the analysis of the jet trajectory. In the experiment, gasoline or diesel fuel was used as a liquid, air was used as a gas. The work shows a diagram of the experimental setup, describes the process of the experiment, and also shows a photograph of the experiment and a comparison with the results of calculations.

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Mathematical model of the submerged jet for the cases of man-made spills 16

Mathematical model of the submerged jet for the cases of man...

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16th All-Russian Seminar with International Participation on Dynamics of Multiphase Media, DMM 2019

作者： Kildibaeva, S.R. Gimaltdinov, I.K. Kildibaeva, G.R. Applied Informatics and Programming Department Sterlitamak Branch of Bashkir State University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

The paper considers a mathematical model of the spread of a multiphase submerged jet, the flow of which is associated with a well damage during the development of a field or pipeline during oil transport. The jet consists of oil droplets and gas bubbles, as well as water involved into the jet. The case is considered when the environmental conditions correspond to the conditions of a stable hydrate existence, because a hydrate shell begins to form and the gas bubble turns into a hydrate on the surface of the bubbles. The integral Lagrangian control volume method is used to describe the jet spread process. The thermo-physical characteristics of a multiphase submerged jet, depending on the vertical coordinate, as well as the trajectory of the jet, are obtained. © 2019 IOP Publishing Ltd.

关键词： Gas hydrates

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Mathematical model of a device for the elimination of deep-water leaks accompanied by hydrate formation

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AIP Conference Proceedings 2022年第1期2467卷

作者： S. R. Kildibaeva I. K. Gimaltdinov A. S. Chiglintseva 1Applied Informatics and Programming Department Sterlitamak branch of Bashkir state University 49 Lenin avenue Sterlitamak Republic of Bashkortostan Russia 2Physics Department Ufa State Oil Technical University 1 Cosmonauts street Ufa Republic of Bashkortostan Russia 3The Academy of Sciences of Bashkortostan 15 Kirova street Ufa Republic of Bashkortostan Russia

Due to possible hydrocarbon leaks that can occur when a well is damaged during deep-sea offshore oil production, it is important to study methods for eliminating leaks. The article deals with the mathematical model of the device "dome-separator", which is used to eliminate deep-water leaks. The article also discusses the possibility of using and advantages of such a device. The paper presents a scheme of the device, a mathematical model that contains the basic equations. In the process of the computational experiments, the thermophysical characteristics of hydrocarbons accumulated inside the dome were determined, and the process of accumulation of hydrocarbons inside the dome was modeled.

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