Contents

Lobachevskii Journal of Mathematics


Vol. 44, No. 5, 2023


Dynamics of Gas Bubbles in a Spherical Cluster under Stochastic Distribution of Their Size and Position

I. A. Aganin, A. I. Davletshin p. 1529  abstract

Dynamics of Gas Bubbles in a Spherical Cluster under the Increase of Their Pressure

I. A. Aganin, A. I. Davletshin p. 1538  abstract

A Model of Joint Collapse of Cavitation Bubbles Located on a Spherical Surface

A. A. Aganin, T. F. Khalitova p. 1548  abstract

Collapse of a Toroidal Cavity in Liquid near a Wall

A. A. Aganin, L. A. Kosolapova, V. G. Malakhov p. 1558  abstract

Focusing of Compression Waves in a Pipe Containing Annular Bubble Cluster

U. O. Agisheva, M. N. Galimzyanov p. 1564  abstract

Determination of Parameters of Hydraulic Fracture Perpendicular to Borehole Axis

R. A. Bashmakov, Z. M. Nagaeva, E. P. Anosova, A. A. Shammatova p. 1571  abstract

Modeling the Dynamics of a Boiling Liquid Nitrogen Jet under Cryogenic Temperatures

R. Kh. Bolotnova, V. A. Korobchinskaya, E. F. Gainullina p. 1579  abstract

Equation of State for Liquid and Gaseous Nitrogen in Cryogenic Temperature Range

R. Kh. Bolotnova, E. F. Gainullina, V. A. Korobchinskaya p. 1587  abstract

Determination of the Anisotropic Reservoir Permeability by Liquid Flow Rate Measurements at Wells under Conditions of Three-Phase Filtration

A. V. Elesin, A. Sh. Kadyrova p. 1593  abstract

Wave Dynamics of a Gas Bubble Covered with a Hyperelastic Shell in a Viscoelastic Liquid

Yu. V. Fedorov, D. D. Gubaidullina p. 1600  abstract

Transmission of an Acoustic Wave Through a Multilayer Medium Containing Layers of Bubble Liquid

R. N. Gafiyatov p. 1606  abstract

Temperature Visualization of the Jet-Vortex Wake Behind an Aircraft

A. M. Gaifullin, Yu. N. Sviridenko p. 1610  abstract

Swirling Three-Dimensional Turbulent Wall Jet

A. M. Gaifullin, A. S. Shcheglov p. 1616  abstract

Dynamics of Sonic Wave under Reflection and Transmission at the Interface of Water and Sand Saturated with Water or Gas Hydrate

E. V. Galiakbarova, G. R. Karimova, G. R. Rafikova p. 1621  abstract

Effect of the Cone-Shaped End Vertex Angle of a Closed Tube on Resonant Gas Oscillations

D. A. Gubaidullin, S. A. Fadeev, L. R. Shaidullin p. 1629  abstract

Acoustic Waves Reflection from a Layer of a Multifractional Polydispersed Gas–Droplet Mixture

D. A. Gubaidullin, R. R. Zaripov p. 1634  abstract

Resonant Oscillations of Gas in Tubes with Different Tips

D. A. Gubaidullin, R. G. Zaripov, L. A. Tkachenko, L. R. Shaidullin, S. A. Fadeev p. 1638  abstract

Numerical Study of the Excitation of Acoustic Gas Oscillations in an Open Tube with a Heated Section

D. A. Gubaidullin, B. A. Snigerev p. 1644  abstract

Pressure Pulse Transmission and Reflection from Layer in Porous Medium with Variable Initial Content of Gas Hydrate

A. A. Gubaidullin, O. Yu. Boldyreva, D. N. Dudko p. 1650  abstract

Reflection and Transmission of a Sound Wave Through the Boundary of a Three-Phase Mixture

D. D. Gubaidullina, Yu. V. Fedorov p. 1657  abstract

Analysis of the High-Speed Liquid Impact onto a Curved Liquid Surface with Heymann’s Theory

T. S. Guseva p. 1661  abstract

Jet Impact Stage of Bubble Collapse Near a Local Depression on a Solid Wall

T. S. Guseva p. 1671  abstract

Computer Simulation of the Flow of Two-Phase Media in Channels and Pipes of Complex Geometric Shape

R. I. Ibyatov, F. G. Akhmadiev p. 1679  abstract

Determination of the Reservoir Permeability Coefficient by Temperature Measurements During the Start-Up of a Horizontal Well

M. Kh. Khairullin, E. R. Badertdinova, Ravil M. Khairullin p. 1686  abstract

Numerical Simulation of Outgoing Shock Waves at Cavitation Bubble Collapse

T. F. Khalitova, N. A. Khismatullina p. 1692  abstract

Modeling of the Two-Phase Flow Through the Hydraulic Fractures in an Oil Reservoir

M. R. Khamidullin, K. A. Potashev, A. B. Mazo p. 1700  abstract

Self-Similar Solution of the Problem of Superheated Water Vapor Injection into a Porous Reservoir

M. K. Khasanov, S. L. Borodin, M. V. Stolpovsky p. 1707  abstract

Point Source-Induced Spherically Symmetric Flow of a Viscous Heat-Conducting Compressible Perfect Gas

O. E. Kirillov p. 1714  abstract

Investigation of the Influence of Weight Coefficients in Solving the Problem of Permeability Identification for an Oil Field

V. P. Kosyakov p. 1721  abstract

Observer Based Control for Continuous Systems with Discrete Measurements and Uncertain Disturbances

A. I. Malikov p. 1728  abstract

Identification of Elastic Boundary Conditions and Crack Depth

T. M. Mannapova, U. O. Agisheva, M. N. Galimzyanov p. 1738  abstract

Nonlinear Bending and Buckling of Oblate Ellipsoidal Shells with Variable Thickness Under External Pressure and Temperature Change

V. E. Moiseeva, Z. V. Skvortsova p. 1744  abstract

Comparison of the Results of 2D and 3D Numerical Simulations of the Rising Bubble in Stagnant Viscous Liquid

I. V. Morenko p. 1752  abstract

Semi-Analytical Solution for a Slug Test in Hydraulically Fractured Well

P. E. Morozov, A. I. Abdullin p. 1758  abstract

Numerical Study of the Process of Gas Extraction from a Gas Hydrate Reservoir with Inhomogeneous Permeability

N. G. Musakaev, S. L. Borodin p. 1765  abstract

Numerical Simulation of Collapse and Rebound of a Cavitation Bubble in Water

I. N. Mustafin p. 1771  abstract

Influence of Temperature Dependence of Viscosity on the Stability of Fluid Flow in an Annular Channel

A. D. Nizamova, V. N. Kireev, S. F. Urmancheev p. 1778  abstract

Comparison of the MacCormack’s and the Kurganov–Tadmor’s Schemes for Sod’s Problem

P. P. Osipov, R. R. Nasyrov p. 1785  abstract

Pressure Diffusion Waves in a Porous Medium Saturated with Two Immiscible Liquids

R. V. Sadovnikov p. 1789  abstract

Numerical Well Test Analysis of Gas Reservoirs

M. N. Shamsiev, V. R. Gadil’shina p. 1796  abstract

Reflection of Acoustic Waves Falling Under a Direct Angle on a System of Flat Layers of a Vapor-Gas-Droplet Mixture with Solid Particles

E. A. Teregulova p. 1801  abstract

Multiphase Flow Problem with a Limiting Gradient under Thermal Influence on the Reservoir Through Horizontal Wells

A. V. Tsepaev p. 1807  abstract

Calculation of Two-Layer Cylindrical Shells Based on the Spline Variant of the Finite Element Method

N. M. Yakupov, H. G. Kiyamov, I. Z. Mukhamedova p. 1813  abstract

To the Calculation of Reinforced Structural Elements of Complex Geometry

S. N. Yakupov, H. G. Kiyamov, N. M. Yakupov p. 1820  abstract

The Stability of Continuous-Discrete Dynamical Systems under Fast Switching

S. V. Akmanova, N. A. Kopylova p. 1826  abstract

Boundaries of the Region of Stability of Autonomous Hamiltonian Systems

A. S. Belova, L. S. Ibragimova, I. G. Mustafina p. 1833  abstract

Investigation of the Approximation Error of the Difference Scheme for the Mathematical Model of Hydrodynamics

A. E. Chistyakov, A. V. Nikitina, I. Yu. Kuznetsova, E. O. Rakhimbaeva, M. V. Porksheyan p. 1839  abstract

Entire Functions of Sine Type for Convex Apeirogons

K. P. Isaev, A. V. Lutsenko, R. S. Yulmukhametov p. 1847  abstract

On Analytic Perturbations of a Non-Self-Adjoint Anharmonic Oscillator

Kh. Ishkin p. 1854  abstract

Interpolation Properties of Certain Classes of Net Spaces

A. Kalidolday, E. Nursultanov p. 1870  abstract

On Solutions of Nonlinear Elliptic Equations with $\boldsymbol{L}_{\mathbf{1}}$-Data in Unbounded Domains

L. M. Kozhevnikova p. 1879  abstract

On the Representation by Series of Exponential Monomials with Almost Real Exponents

A. F. Kuzhaev, O. A. Krivosheeva p. 1902  abstract

Mathematical Modeling the Processes of Supersonic Cold Gas Dynamic Spraying of Nanoparticles on Substrates

V. O. Podryga, S. V. Polyakov, N. I. Tarasov, V. A. Usachev p. 1918  abstract

On Bäcklund Transformations Preserving the Darboux Integrability of Hyperbolic Equations

S. Ya. Startsev p. 1929  abstract

General Trace Formula for Perturbations from the Gilbert–Shmidt Class

I. D. Tsopanov, A. K. Bazzaev p. 1938  abstract

Langford Model: Dynamics, Bifurcations, Attractors

M. G. Yumagulov, M. F. Fazlytdinov, R. I. Gabdrahmanov p. 1953  abstract