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Hypersonic Flow Field Reconfiguration and Drag Reduction of Blunt Body with Spikes and Sideward Jets
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Error estimates for scalar conservation laws by a kinetic approach
Published 2006-01-01“…We use the kinetic approach of Perthame and Tadmor (1991) to calculate the error estimates for general scalar conservation laws governing problems in gas dynamics or fluid mechanics in general. The Kružkov and Kuznetsov techniques are generalized to this method, and an error bound of order ε (where ε is the mean free path) is obtained.…”
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23
Conservation Laws for Some Systems of Nonlinear Partial Differential Equations via Multiplier Approach
Published 2012-01-01“…The conservation laws for the integrable coupled KDV type system, complexly coupled kdv system, coupled system arising from complex-valued KDV in magnetized plasma, Ito integrable system, and Navier stokes equations of gas dynamics are computed by multipliers approach. First of all, we calculate the multipliers depending on dependent variables, independent variables, and derivatives of dependent variables up to some fixed order. …”
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Nonoscillatory Central Schemes for Hyperbolic Systems of Conservation Laws in Three-Space Dimensions
Published 2013-01-01“…Details of the schemes, their implementation, and properties are presented together with results from several prototypical applications of hyperbolic conservation laws including a nonlinear scalar equation, the Euler equations of gas dynamics, and the ideal magnetohydrodynamic equations. …”
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Numerical Simulation of Combustion and Rotor-Stator Interaction in a Turbine Combustor
Published 2003-01-01“…The governing equations are written in the strong conservation form and solved using a fully implicit, finite-difference approximation. The gas dynamics and chemistry equations are fully decoupled. …”
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On Analytical Solution of a Plasma Flow over a Moving Plate under the Effect of an Applied Magnetic Field
Published 2020-01-01“…The BGK type of the Boltzmann kinetic equation is used to study the gas dynamics various regimes with Maxwellian velocity distribution functions. …”
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27
Compensated integrability on tori; a priori estimate for space-periodic gas flows
Published 2024-11-01“…On the one hand to $d$-dimensional inviscid gas dynamics, governed by the Euler equations, when the initial data is space-periodic; we obtain an a priori space-time estimate of our beloved quantity $\rho ^{\frac{1}{d}}p$. …”
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28
Nonlinear dynamic evolution of a novel normalized time-fractional Burgers equation
Published 2025-03-01“…The classical Burgers equation is a basic partial differential equation (PDE) applied to model many physical phenomena such as traffic flow, gas dynamics and fluid dynamics, while the time-fractional Burgers equation is a modified form incorporating a fractional derivative in time to model diffusion and non-linear wave phenomena with memory effects. …”
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New Applications in Gas Geochemistry
Published 2020-01-01“…Hydrocarbons are a significant energy resource, helium is applied in many high-tech instruments, and studies of crustal gas dynamics provide insight in the geodynamic processes and help monitor seismic and volcanic hazards. …”
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Two-Stroke Thermodynamic Cycle Optimization of a Single-Cylinder Free-Piston Engine Generator
Published 2019-01-01“…The one-dimensional flow simulation model of the FPEG is created based on the gas dynamics equation, Weber combustion function, and heat transfer function, and then the model is validated by the data tested from the prototype system. …”
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31
Rarefied Nozzle Flow Computation Using the Viscosity-Based Direct Simulation Monte Carlo Method
Published 2024-12-01“…Given the high Knudsen numbers associated with micro-nozzle flows, rarefied gas dynamics often dominate, and conventional computational fluid dynamics (CFD) methods fail to capture accurate flow expansion behavior. …”
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Design of gas-jet drive with vortex valve thrust control system
Published 2021-06-01“…Abramovich, Applied Gas Dynamics]. Computational and theoretical studies of the gas flow from a gas-jet drive with a vortex valve in the maximum thrust mode and in the thrust control mode have been carried out…”
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33
Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191
Published 2025-01-01“…These high-resolution data offer the first spatially resolved map of gas dynamics within an SMBH's sphere of influence under such powerful feedback. …”
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Impact of Wetting-Drying Cycles on Soil Intra-Aggregate Pore Architecture Under Different Management Systems
Published 2024-12-01“…In many soil processes, including solute and gas dynamics, the architecture of intra-aggregate pores is a crucial component. …”
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Global and Local Infall in the ASHES Sample (GLASHES). I. Pilot Study in G337.541
Published 2025-01-01“…To understand the gas dynamics at the core scale in the very early evolutionary stages before being severely affected by feedback, we have conducted Atacama Large Millimeter/submillimeter Array (ALMA) observations toward a 70 μ m dark massive clump, G337.541-00.082 as part of the Global and Local infall in the ASHES sample (GLASHES) program. …”
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NEW-GENERATION STAINLESS STEEL SYSTEMS FOR METALLURGICAL PRODUCTION
Published 2018-01-01“…The article deals with the development of devices for mechanization and automation of metal flow control – steel-pouring ladles sliding gates of the new generation of Vulkan-TM production, the history of their production.The various technical solutions underlying the creation of the sliding gates of the «VT» series, innovative solutions used in design of the sliding gates layouts and their competitive advantages are shown.The design and operation principle of the new development – the device for gas-dynamic protection of the metal stream from secondary oxidation is described.…”
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38
Centrifugal compressors of turboexpander units: development of approaches and experience of optimal design
Published 2022-06-01“…The process of designing a new turboexpander unit using the Universal modeling method consists of several stages: preliminary design, optimization, calculation of gas dynamic characteristics. The development of modern computational methods and the accumulation of experimental research results has allowed to improve mathematical models in the field of calculation and design of CC turbo-expander units. …”
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39
On Stack Reconstruction Problem
Published 2009-08-01“…The paper reveals the possibility to reconstruct stacks while using gas discharging channel made of composite material on the basis of glass-reinforced plastic which permits to reduce thermo-stressed actions on reinforced concrete and increase volume of released gases due to practically two-fold reduction of gas-dynamic pressure losses along the pipe length.…”
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Enhancement of Aeroengine Combustion Chamber Air Cooling Holes Design for Emission Reduction and Pattern Factor Control
Published 2024-12-01“…It is important to emphasize that the mean deviation of gas dynamic results obtained from AxStream and CFD simulation results was found to be insignificant, hence the CFD approach has been validated. …”
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