ESSN 2313-6022 (электронное издание), ISSN 1997-1397 (печатное издание)

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  • Approximate Solution to a Model of the far Momentumless Axisymmetric Turbulent Wake 

    Shmidt, Alexey V.; Шмидт, Алексей В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The flow in the far axisymmetric momentumless turbulent wake is described with the use of a mathematical model based on k − ε semi-empirical model of turbulence. A group-theoretical analysis of the mathematical model of ...
  • Analysis of the Electric Current Distribution in a Three-Layer Conductive Structure 

    Levitskiy, Alexey A.; Marinushkin, Pavel S.; Bakhtina, Valentina A.; Левицкий, Алексей А.; Маринушкин, Павел С.; Бахтина, Валентина А. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The paper presents an analytical model allowing to investigate the electric current distribu- tion in a three-layer conductive structure. The proposed model takes into account the characteristics of the three conductive ...
  • Difference Equations and Hadamard Composition of Multiple Power Series 

    Leinartas, Evgeny D.; Leinartas, Evgeny K.; Лейнартас, Евгений Д.; Лейнартас, Евгений К. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The sufficient conditions are given for the coefficients of two power series, which ensure the rationality of their Hadamard composition. Under certain additional constraints, the existence of a system of polynomial ...
  • Cylindrically Symmetric Generalized Ghost Pilgrim Dark Energy Cosmological Univers 

    Mandala Krishna; Sobhanbabu Kappala; Rajamahanthi Santhikumar; Мандала Кришна; Собханбабу Каппала; Раджамаханти Сантикумар (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The solution of the cylindrically symmetric Einstein Rosen universe is investigated and occupied with generalized ghost pilgrim dark energy and matter. To obtain the exact solutions of Einstein’s field equations, we ...
  • On a New Class of Integrals Involving Generalized Hypergeometric Functions 

    Adem Kilicman; Shantha Kumari Kurumujji; Arjun K. Rathie; Адем Киликман; Шанта Кумари Курумуджи; Арджун К. Рати (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    In the theory of hypergeometric and generalized hypergeometric series, classical summation theorems such as those of Gauss, Gauss second, Bailey and Kummer for the series 2F1; Watson, Dixon, Whipple and Saalsh¨uz play a ...
  • Further Remarks on the Explicit Generating Function Expression of the Invariant Measure of Critical Galton-Watson Branching Systems 

    Imomov, Azam A.; Iskandarov, Sarvar B.; Имомов, Азам А.; Искандаров, Сарвар Б. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    Consider the critical Galton-Watson branching system with infinite variance of the offspring law. We provide an alternative arguments against what Slack [9] did when it seeked for a local expression in the neighborhood ...
  • Coincidence and Common Fixed Point Theorems for Hybrid Mappings Via C-class Function 

    Taieb Hamaizia; Stojan Radenovi´c; Arsalan Hojjat Ansari; Тайеб Хамайзия; Стоян Раденович; Арсалан Ходжат Ансари (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    In this paper, we prove common fixed point theorems for two pairs of hybrid mappings in metric spaces using the concept of C-class function and T -weak commutativity. Our Theorems generalize some well-know results
  • Dual Band HTSC Power Limiter 

    Afonin, Aleksey O.; Alexandrovsky, Alexander A.; Govorun, Ilya V.; Leksikov, Alexander A.; Ugryumov, Andrey V.; Ogorodnikov, Dmitriy K.; Афонин, Алексей О.; Александровский, Александр А.; Говорун, Илья В.; Лексиков, Александр A.; Угрюмов, Андрей В.; Огородников, Дмитрий К. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    A new construction of dual band HTSC power limiter is proposed. The device consists of two microstrip bandpass filters. Each filter consists of two quarter-wave resonators which couple through a composite half-wave ...
  • Hysteresis Effects in the Critical Behavior of Heisenberg Thin Films in an External Oscillating Field 

    Eikhler, Alexey V.; Prudnikov, Vladimir V.; Prudnikov, Pavel V.; Ейхлер, Алексей В.; Прудников, Владимир В.; Прудников, Павел В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    In this work, we simulated hysteresis effects in thin Heisenberg films subjected to an external oscillating field by Monte Carlo methods. It was observed that the system exhibits different types of phase transitions below ...
  • A Study of the Scaling Behavior of the Two-dimensional Ising Model by Methods of Machine Learning 

    Chubarova, Alina A.; Mamonova, Marina V.; Prudnikov, Pavel V.; Чубарова, Алина А.; Мамонова, Марина В.; Прудников, Павел В (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    In the field of condensed matter physics, machine learning methods have become an increas- ingly important instrument for researching phase transitions. Here we present a method for calculating the universal characteristics ...
  • Optimal Control for an Elastic Frictional Contact Problem 

    Ahlem Benraouda; Ахлем Бенрауда (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    We consider a mathematical model which describes a frictional contact between an elastic body and a foundation. We prove the existence of a unique weak solution to the problem. Then, we study the continuous dependence ...
  • Analysis of the Unstable State of a Nematic Liquid Crystal Based on a Simplified Dynamic Model 

    Smolekho, Irina V.; Смолехо, Ирина В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The Fr´eedericksz effect consisting in the reorientation of liquid crystal molecules in an extended layer under the action of inhomogeneous electric field is simulated in the paper. The constitutive equations for tangential ...
  • On Hypergeometric Functions of Two Variables of Complexity One 

    Beloshapka, Valerii K.; Белошапка, Валерий К. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    For a series of examples of Horn systems and the Lauricella system for functions of two variables the description of solution of complexity one is given. Several questions are formulated
  • On One Exact Solution of an Evaporative Convection Problem with the Dirichlet Boundary Conditions 

    Bekezhanova, Victoria B.; Goncharova, Olga N.; Бекежанова, Виктория Б.; Гончарова, Ольга Н. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    Characteristics of steady-state convective flows of a liquid and a co-current gas flux under the conditions of inhomogeneous evaporation of the diffusive type in a flat horizontal channel are studied. A partially-invariant ...
  • Thermocapillary Convection of Immiscible Liquid in a Three-dimensional Layer at Low Marangoni Numbers 

    Andreev, Viktor K.; Андреев, Виктор К. (Journal of Siberian Federal University. Сибирский федеральный университет, 2024-04)
    The joint convection of two viscous heat-conducting liquids in a three-dimensional layer bounded by solid flat walls is studied. The upper wall is thermally insulated, and a non-stationary temperature field is set on the ...
  • Specific Damping Capacity of Layered Structures with a Layer of Dissipative Metamaterial under Quasi-Static and Dynamic Impacts 

    Skripnyak, Vladimir A.; Chirkov, Maxim O.; Skripnyak, Vladimir V.; Скрипняк, Владимир А.; Чирков, Максим O.; Скрипняк, Владимир В. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
  • Modelling of Residual Stresses and Distortions of the Wall on a Substrate Built by Wire-Arc Surfacing 

    Dudin, Dmitriy S.; Keller, Ilya E.; Permyakov, Gleb L.; Trushnikov, Dmitriy N.; Дудин, Дмитрий С.; Келлер, Илья Э.; Пермяков, Глеб Л.; Трушников, Дмитрий Н. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
    To study the arising of technological distortions and residual stresses in structures created by wire-arc surfacing, it is proposed to consider a wall consisting of ten layers deposited on a substrate. A wall is deposited ...
  • Comparison of the Response of a Homogeneous Medium to the Dynamic Impact of Single and Segmented Rods 

    Kraus, Alexander E.; Shabalin, Ivan I.; Buzyurkin, Andrey E.; Kraus, Evgeny I.; Краус, Александр Е.; Шабалин, Иван И.; Бузюркин, Андрей Е.; Краус, Евгений И. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
    A series of calculations of the interaction of single and segmented rods with massive blocks and plates of finite thickness have been performed. Comparisons with experimental data for verification of material parameters ...
  • Mathematical Modeling of Three-dimensional Stress-strain State of Homogeneous and Composite Cylindrical Axisymmetric Shells 

    Gorynin, Arseniy G.; Gorynin, Gleb L.; Golushko, Sergey K.; Горынин, Арсений Г.; Горынин, Глеб Л.; Голушко, Сергей К. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
    The study is devoted to the application of the asymptotic splitting method for solving static problems of deformation of homogeneous isotropic and composite cylindrical shells. The problem of deformation of a composite ...
  • Numerical Schemes of Higher Approximation Orders for Dynamic Problems of Elastoviscoplastic Media 

    Golubev, Vasily I.; Nikitin, Ilia S.; Xin Mi; Голубев, Василий И.; Никитин, Илья С.; Синь Ми (Siberian Federal University. Сибирский федеральный университет, 2024-02)
    For a stable numerical solution of the constitutive system of an elastoviscoplastic model of a continuous medium with the von Mises yield condition and hardening, an explicit-implicit second-order scheme was proposed. ...

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