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Article
Open AccessNumerical Simulation of the Interaction between Weak Shock Waves and Supersonic Boundary Layer on a Flat Plate with the Blunt Leading Edge
The interaction of weak shock waves in form of an N-wave with the supersonic laminar boundary layer on a flat plate with blunt leading edge at the free-stream Mach number M = 2.5 is numerically studied. The numer...
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Article
A Сomparative Analysis of Oils from Carbonate Sediments of the Upper Usolskaya Subformation and the Vendian–Cambrian Pay Horizons in the Central Part of the Nepsko-Botuobinskaya Anteclise
The study of the prospects in the central part of the Nepsko-Botuobinskaya Anteclise is focused on the subsalt oil and gas bearing horizons of Group B (Osinsky, Upper Ust-Kutsky, Lower Ust-Kutsky, and Preobraz...
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Article
Numerical Simulation of the Interaction of a Mach Wave and a Boundary Layer on a Flat Plate
Using direct numerical simulation, a problem of the interaction of a Mach wave with a boundary layer on a flat plate, streamlined by a supersonic perfect gas flow at the Mach number M = 2.5 is considered. The ...
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Article
Numerical Simulation of the Evolution of Turbulent Spots in a Supersonic Boundary Layer over a Plate
Direct numerical simulations of the evolution of turbulent spots in the boundary layer on a flat plate at a zero angle of attack at the freestream Mach number M∞ = 6 are carried out. The propagation of artificial...
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Article
Open Accesseco2AI: Carbon Emissions Tracking of Machine Learning Models as the First Step Towards Sustainable AI
The size and complexity of deep neural networks used in AI applications continue to grow exponentially, significantly increasing energy consumption for training and inference by these models. We introduce an o...
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Article
Simulation of the Laminar–Turbulent Transition by Applying Hybrid Difference Schemes
A simple hybrid difference scheme applicable to shock wave flows is proposed. The scheme remains monotone near shock waves and switches to a low-dissipative nonmonotone difference scheme in smooth flow regions...
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Chapter and Conference Paper
The Role of Receptivity in Prediction of High-Speed Laminar-Turbulent Transition
Receptivity plays a crucial role in the physics-base methodology for prediction of the transition onset location in the boundary-layer flows. A major stumbling block for develo** of this methodology is sensi...
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Article
Open AccessNumerical Simulation of Disturbance Evolution in the Supersonic Boundary Layer over an Expansion Corner
The linear and nonlinear stages of disturbance development in the supersonic boundary layer over a 10° expansion corner is investigated numerically within the framework of Navier—Stokes equations for Mach numb...
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Article
Simulation of the Laminar–Turbulent Transition by Applying Dissipative Numerical Schemes
The applicability of a low-order monotone shock-capturing scheme to the simulation of the laminar–turbulent transition is demonstrated. The laminar–turbulent transition is simulated in a supersonic boundary la...
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Article
Numerical Simulation of the Interaction between a Shock and the Boundary Layer on a Flat Plate in Motion
The results of numerical simulation of the interaction between a shock and the laminar boundary layer on a flat plate in motion in supersonic perfect-gas flow at Mach number М∞ = 3 are considered. The shock is pr...
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Article
Measuring Devices Based on Molecular-Electronic Transducers
The basic principles of operation of the sensors based on molecular-electronic transducers (METs) are described. The review of investigations of physical processes into MET and their operating characteristics ...
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Article
Mach Wave Effect on Laminar-Turbulent Transition in Supersonic Flow over a Flat Plate
The effect of a Mach wave (N wave) on laminar-turbulent transition induced by the first instability mode (Tollmien–Schlichting wave) in the flat-plate boundary layer is investigated on the basis of the numerical ...
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Article
Numerical Simulation of the Flow over a Segment-Conical Body on the Basis of Reynolds Equations
Numerical simulation was used to study the 3D supersonic flow over a segment-conical body similar in shape to the ExoMars space vehicle. The nonmonotone behavior of the normal force acting on the body placed i...
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Article
Effect of Small Bluntness on Formation of Görtler Vortices in a Supersonic Compression Corner Flow
The influence of small cylindrical bluntness of the leading edge of a flat plate on formation of spatial structures in a nominally two-dimensional supersonic compression corner flow at the Mach number M∞ ≈ 8 a...
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Article
Direct numerical simulation of the laminar–turbulent transition at hypersonic flow speeds on a supercomputer
A method for direct numerical simulation of three-dimensional unsteady disturbances leading to a laminar–turbulent transition at hypersonic flow speeds is proposed. The simulation relies on solving the full th...
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Article
Circular cylinder in a transonic flow at high Reynolds numbers: Thermal problem
The results of numerical simulation of transonic cross flow of a perfect gas around a circular cylinder at high Reynolds numbers are used to solve the thermal problem. The temperature distributions along the c...
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Article
Direct numerical simulation of laminar–turbulent flow over a flat plate at hypersonic flow speeds
A method for direct numerical simulation of a laminar–turbulent flow around bodies at hypersonic flow speeds is proposed. The simulation is performed by solving the full three-dimensional unsteady Navier–Stoke...
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Article
The interaction of shock waves with a boundary layer on a sharp plate and a blunted plate
The interaction of shock waves with a turbulent boundary layer on a sharp plate and a blunted plate is numerically investigated. The shock waves in the flow are generated by wedges installed on the flat plate....
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Article
The effect of spatial perturbations of a supersonic flow on heat flux to the surface of blunt bodies
The dependence of perturbations of pressure and heat flux to the surface of blunt bodies (cylinder, ellipse, and sphere) on the period of spatial perturbations of a supersonic flow has been studied numerically...
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Article
Experimental investigation of flow past simple model bodies in hypersonic wind tunnels at similar values of the Mach and Reynolds numbers but at different physical flow velocities
The pressure distributions over the surfaces of simple model bodies, such as hemisphere, wedge, and cone, and the bow shock stand-off distances from these bodies are investigated in hypersonic wind tunnels wit...
