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Journal articles on the topic 'Gasdynamic characteristics'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Ivanov, Vyacheslav Mikhaylovich, and Yuriy Vladimirovich Kozhukhov. "Rezul'taty chislennogo modelirovaniya vyazkogo potoka v maloraskhodnykh stupenyakh tsentrobezhnykh kompressorov kak osnova sozdaniya matematicheskoy modeli napora." Refrigeration Technology 109, no. 3 (2020): 24–29. http://dx.doi.org/10.17816/rf104059.

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The paper envisages the results of calculation of a threedimensional viscous flow in 18 lowflow stages of centrifugal compressors in the range of optimal conditional flow coefficient Фopt = 0.007-0.018. Gasdynamic characteristics of the internal and polytropic pressure coefficients in full parameters were plotted and compared with experimental data. The calculated gasdynamic characteristics of viscous flow satisfying the engineering accuracy of calculations and experimental character of the curves were obtained using Ansys CFX software

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2

Takano, Yasunari, and Teruaki Akamatsu. "Analysis of chemical effects on reflected-shock flow fields in combustible gas." Journal of Fluid Mechanics 160 (November 1985): 29–45. http://dx.doi.org/10.1017/s0022112085003378.

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This paper analyses effects of chemical reactions on reflected-shock flow fields in shock tubes. The method of linearized characteristics is applied to analyse gasdynamic disturbances due to chemical reactions. The analysis treats cases where combustible gas is highly diluted in inert gas, and assumes that flows are one-dimensional and that upstream flows in front of the reflected-shock waves are in the frozen state. The perturbed gasdynamic properties in the reflected-shock flow fields are shown to be expressible mainly in terms of a heat-release function for combustion process. In particular

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3

Khramtsov, I. V., P. V. Pisarev, V. V. Palchikovskiy, R. V. Bulbovich, and V. V. Pavlogradskiy. "Numerical Analysis of Gasdynamic Characteristics of Vortex Ring." Applied Mechanics and Materials 770 (June 2015): 483–88. http://dx.doi.org/10.4028/www.scientific.net/amm.770.483.

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In the framework of the research the authors have solved the problem of formation and dynamics of the vortex ring. Intensive turbulent vortex rings produced by piston generators have been considered. The research has been carried out on the basis of numerical simulations in fluid dynamics program ANSYS CFX using the high-performance computing system. We have obtained the dynamic and geometrical characteristics of the vortex ring on the basis of numerical experiments. The results are in agreement with self-similar law of vortex ring dynamics and experimental results. The authors have analyzed t

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4

TENG, Honghui. "Gasdynamic characteristics of toroidal shock and detonation wave converging." Science in China Series G 48, no. 6 (2005): 739. http://dx.doi.org/10.1360/142004-86.

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5

WATANUKI, Tadaharu, Eiji OGURA, Yasuhiro MIZOBUCHI, and Hirotoshi KUBOTA. "Characteristics of Combustion-Driven CO2 Gasdynamic Laser. III. Characteristics of Laser Output Power." Journal of the Japan Society for Aeronautical and Space Sciences 48, no. 560 (2000): 277–83. http://dx.doi.org/10.2322/jjsass.48.277.

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6

Abakumov, B. V., S. N. Minin, B. A. Tikhonov, and L. N. Yudina. "Investigation of the specific energy characteristics of industrial gasdynamic CO2lasers." Soviet Journal of Quantum Electronics 16, no. 2 (1986): 227–30. http://dx.doi.org/10.1070/qe1986v016n02abeh005750.

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7

Sharovskiy, M. A., M. Yu Shelkovskiy, S. E. Vasilenko, and M. K. Koroleva. "Gasdynamic characteristics of compressor cascades with special profiling of blade rows." Journal of Machinery Manufacture and Reliability 44, no. 7 (2015): 663–67. http://dx.doi.org/10.3103/s1052618815070134.

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8

Anufriev, Igor, Aleksandr Golovanov, Aleksandr Tsimbalyuk, and Oleg Sharypov. "Dynamics of Shock Waves in the Cylindrical Channel With Confusers." Siberian Journal of Physics 4, no. 2 (2009): 13–18. http://dx.doi.org/10.54362/1818-7919-2009-4-2-13-18.

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Current work covers experimental and theoretical investigation of conic confusers impact on the intensity shock wave, generated in the shock tube by explosion of gunpowder charge. For given conditions optimal geometric characteristics of the confuser, providing maximal pressure in the shock wave front, were found experimentally. The mathematical model was developed and numerical simulation of the axisymmetric shock-wave gas flow in the channel was carried out. Experimentally was shown, that the application of the optimal confuser provides significant increase of the efficiency gasdynamic effec

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9

Dautov, N. G., and A. M. Starik. "Analysis of energy and spectral characteristics of a gasdynamic laser with N2-DCl mixing." Journal of Applied Mechanics and Technical Physics 34, no. 4 (1994): 455–60. http://dx.doi.org/10.1007/bf00851457.

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10

Volkov, K. N., V. N. Emel’yanov, A. V. Efremov, and A. I. Tsvetkov. "Gasdynamic and Acoustic Characteristics of a Subsonic Jet-Edge Rod Generator of Acoustic Radiation." Journal of Engineering Physics and Thermophysics 93, no. 5 (2020): 1179–90. http://dx.doi.org/10.1007/s10891-020-02220-6.

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11

Wang, Meng, and D. R. Kassoy. "Evolution of weakly nonlinear waves in a cylinder with a movable piston." Journal of Fluid Mechanics 221 (December 1990): 23–52. http://dx.doi.org/10.1017/s0022112090003470.

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Small-amplitude wave motion in an inert gas confined between a moving piston and a fixed cylinder endwall is studied using the unsteady Euler equations. The waves, generated by either initial disturbances or piston motion, reflect back and forth in the cylinder on the acoustic timescale. The accumulated effect of these waves controls the bulk variations of velocity and thermodynamic variables on the longer piston timescale. Perturbation methods, based on the small ratio of acoustic to piston time, are employed to formulate the gasdynamic problem. The application of multiple timescaling allows

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12

Zamuraev, Vladimir, and Anna Kalinina. "Gasdynamic Effects of Periodic Pulse Energy Supply in Widening Channel With Consideration of Air Real Properties." Siberian Journal of Physics 4, no. 3 (2009): 50–54. http://dx.doi.org/10.54362/1818-7919-2009-4-3-50-54.

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The impact of molecular (thermodynamic) gas properties on qualitative and quantitative characteristics of gasdynamic effects in a widening channel (with supersonic flow) at periodic pulse energy supply has been studied. As thermal equation of state and other gas thermodynamic properties equations for real gas have been used (with air parameters) with consideration of excitation of oscillation, dissociation and single ionization. We show that qualitatively the effects do not depend on taking molecular properties into account, but the existence of inner degrees of freedom leads to losses in trac

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13

SATAKE, Tsunehisa, Tomoyuki CHIMURA, Takehito YAG, Mitsuo NAKAJIMA, Kunio YOSHIKAWA, and Kazuhiko HORIOKA. "Gasdynamic Characteristics of a Free-Vortex-Type Supersonic Laser Window. The Effect of Diffuser Configuration." Review of Laser Engineering 24, no. 2 (1996): 253–60. http://dx.doi.org/10.2184/lsj.24.253.

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14

WATANUKI, Tadaharu, Eiji OGURA, Yasuhiro MIZOBUCHI, Satoru MOMO, and Hirotoshi KUBOT. "Characteristics of Combustion-Driven CO2 Gasdynamic Laser. (II). Effect of Expansion Length of Supersonic Nozzle." Journal of the Japan Society for Aeronautical and Space Sciences 48, no. 559 (2000): 257–64. http://dx.doi.org/10.2322/jjsass.48.257.

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15

Kravchenko, I. N., A. L. Galinovskii, S. A. Velichko, Yu A. Kuznetsov, D. M. Bodunov, and E. V. Preobrazhenskaya. "Effect of the Thermal and Gasdynamic Characteristics of a Plasma Metallization Jet during Coating Formation." Russian Metallurgy (Metally) 2022, no. 12 (2022): 1554–61. http://dx.doi.org/10.1134/s003602952212014x.

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16

Attetkov, A. V., M. M. Boiko, L. N. Vlasova, and V. S. Solov'ev. "Gasdynamic characteristics of flows in problems of the launching of incompressible plates by detonation products." Journal of Applied Mechanics and Technical Physics 29, no. 6 (1989): 808–14. http://dx.doi.org/10.1007/bf00858376.

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17

Kartashov, S. V., and Yu V. Kozhukhov. "Basis of the computational domain selection in the problems of modeling a viscous flow in lowflow stages of a centrifugal compressor." Refrigeration Technology 109, no. 1 (2020): 22–27. http://dx.doi.org/10.17816/rf104080.

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The paper examines the problem of definition of the computational domain of the gasflow part at numerical simulation (RANS-approach) of gas flow in the low-flow stage of a centrifugal compressor at conditional flow rate Ф = 0.008. Several variations of replacing the design assembly of the flow part of the simulation stage with a gasdynamic model are considered: main working path of the stage; main working path of the stage taking into account the inlet area (inlet pipe and cowling); main working path of the stage taking into account the adjacent areas with full and partial connection with the

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18

WATANUKI, Tadaharu, Eiji OGURA, Yasuhiro MIZOBUCHI, Shigeru SATO, and Hirotoshi KUBOTA. "Characteristics of combustion-driven CO2 gasdynamic laser. (I). Influence of expansion ratio of a supersonic nozzle." Journal of the Japan Society for Aeronautical and Space Sciences 36, no. 419 (1988): 550–57. http://dx.doi.org/10.2322/jjsass1969.36.550.

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19

Трусов, П. В., and P. V. Trusov. "Modeling of human breath: conceptual and mathematical statements." Mathematical Biology and Bioinformatics 11, no. 1 (2016): 64–80. http://dx.doi.org/10.17537/2016.11.64.

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The article is devoted to the main aspects of the development of a mathematical model of the human respiratory system taking into account the effects of environmental factors. The proposed model is a submodel of "meso-level" multilayered mathematical model of the evolution of functional disorders of the human body. The conceptual and mathematical formulations of the problem are discussed. The breathing is considered as a set of synchronized processes of gas dynamics, deformation of the porous medium and diffusion. The results of the calculation of the air flow characteristics during quiet brea

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20

Rebone, Vitalii K., Mikhail A. Rotinyan, Igor' A. Fedorov, A. M. Krivitskii, M. V. Moroz, and V. L. Moshkov. "Energy and gasdynamic characteristics of a supersonic cw chemical HF laser with a radial-expansion nozzle array." Quantum Electronics 27, no. 10 (1997): 855–59. http://dx.doi.org/10.1070/qe1997v027n10abeh001074.

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21

Kravchun, P. N., and V. V. Turmachev. "Method for measuring the acoustical characteristics of waveduct elements with unknown gasdynamic parameters of the internal medium." Measurement Techniques 38, no. 7 (1995): 810–14. http://dx.doi.org/10.1007/bf02616269.

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22

Volkov, R. E., and A. G. Obukhov. "PARALLEL COMPUTATIONS IN STUDIES OF DEPENDENCE OF GAS DYNAMIC PARAMETERS OF UPWARD SWIRLING FLOW OF GAS ON BLOWING VELOCITY." Oil and Gas Studies, no. 1 (February 28, 2016): 92–97. http://dx.doi.org/10.31660/0445-0108-2016-1-92-97.

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The rectangular parallelepiped explicit difference schemes for the numerical solution of the complete built system of Navier-Stokes equations. These solutions describe the three-dimensional flow of a compressible viscous heat-conducting gas in a rising swirling flows, provided the forces of gravity and Coriolis. This assumes constancy of the coefficient of viscosity and thermal conductivity. The initial conditions are the features that are the exact analytical solution of the complete Navier-Stokes equations. Propose specific boundary conditions under which the upward flow of gas is modeled by

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23

NIKITIN, P. V., L. N. RABINSKIY, and O. V. TUSHAVINA. "FORMATION OF THE SUPERSONIC HETEROGENEOUS STREAMS IN THE GASDYNAMIC ACCELERATORS WITH GREAT ELONGATION." Periódico Tchê Química 16, no. 33 (2019): 728–35. http://dx.doi.org/10.52571/ptq.v16.n33.2019.743_periodico33_pgs_728_735.pdf.

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The present article describes results of the experimental and theoretical investigation of gas dynamics and heat exchange in the course of a supersonic flow of the gas-powder mixture within the axially symmetric gas-dynamic accelerators, which have small critical cross-sections (dcritical from 1 to 3 mm) and substantial elongation (L/dcritical from 70 to 200). The necessity of performance of such investigations was determined by two aspects. The first is the development of the innovative technologies with the purpose of formation of the heat-resistant coatings and other coatings with various f

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24

Solovyeva, O. A., I. S. Sharikov, and N. I. Sadovsky. "The influence of reality gas calculation methods on the gasdynamic characteristics of a gas pumping unit centrifugal compressor." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 8, no. 3 (2024): 61–68. http://dx.doi.org/10.25206/2588-0373-2024-8-3-61-68.

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When designing compressors, it is necessary to take into account the reality of the working fluid, since when calculating the compressor using ideal gas models, strong deviations of the operating parameters from the calculated ones occur, which can lead to non-fulfillment of the technical specifications, as well as to the formation of non-stationary processes. The correct choice of the gas reality accounting methodology allows us to bring the calculated data as close as possible to the experimental ones. Thus, the choice of the most accurate method of accounting for the reality of gas makes it

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25

Bungova, T. A., A. V. Lavrov, A. G. Novoselov, A. A. Pustogarov, and V. F. Sharkov. "Experimental and theoretical investigation of the specific energy characteristics of a gasdynamic CO2laser with a mixing nozzle array." Soviet Journal of Quantum Electronics 21, no. 12 (1991): 1299–302. http://dx.doi.org/10.1070/qe1991v021n12abeh004526.

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26

Zaval'nyi, P. N., O. E. Vasin, A. V. Tarasov, and B. S. Revzin. "Determination of the Gasdynamic Characteristics of the Replaceable Flow Section of a Centrifugal Supercharger under Compressor Station Conditions." Chemical and Petroleum Engineering 40, no. 3/4 (2004): 218–21. http://dx.doi.org/10.1023/b:cape.0000033679.55539.94.

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27

Goriachkin, E. S., G. M. Popov, V. N. Matveev, A. I. Shcherban, I. A. Kudryashov, and S. A. Melnikov. "Gasdynamic and strength improvement of the axial flow turbine of a helicopter gas turbine engine." VESTNIK of Samara University. Aerospace and Mechanical Engineering 21, no. 1 (2022): 42–56. http://dx.doi.org/10.18287/2541-7533-2022-21-1-42-56.

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The article presents the results of the development of proposals to increase the safety margin of the blades and the efficiency of a single-stage axial flow turbine compressor of a small-sized turbo-shaft engine being modernized with the use of multidiscipline optimization methods. Analysis of the initial version of the turbine showed that the margin of safety of the working blades is significantly lower than that required by the strength standards. To eliminate the problem encountered the task of blade development was initially solved only according to strength characteristics, without taking

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28

Jayamani, Ananthkumar, and Frank K. Lu. "Method-of-characteristics model for a low-enthalpy, detonation-driven shock tube." Physics of Fluids 34, no. 6 (2022): 066109. http://dx.doi.org/10.1063/5.0093888.

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A reduced-order model for a detonation-driven shock tube was developed using the method of characteristics (MoC). The scope of this work was limited to calorically perfect slugs of gases. Effects of momentum and heat losses were included. The governing equations for inviscid, one-dimensional flow of a calorically perfect gas were simplified using MoC. These simplified equations represented and resolved various gasdynamic phenomena such as weak compressions, rarefactions, shocks, and contact surfaces. The momentum losses in the governing equations were estimated using established friction facto

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29

Hashimoto, Takashi, Susumu Nakano, Michio Hachijin, Katsuhiko Komatsu, Yasuharu Mine, and Hiroshi Hara. "Characteristics of a downstream-mixing CO_2 gasdynamic laser caused by behavior of two supersonic flows in a laser cavity." Applied Optics 32, no. 30 (1993): 5936. http://dx.doi.org/10.1364/ao.32.005936.

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30

Reader, T., V. A. Tenenev, and A. A. Chernova. "Determination of Flow Characteristics in Technological Processes with Controlled Pressure." Devices and Methods of Measurements 11, no. 3 (2020): 204–11. http://dx.doi.org/10.21122/2220-9506-2020-11-3-204-211.

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Assessment of the environmental and economic performance of a safety valve requires information about the flow of the substance through the valve when it is actuated. The goal of this paper was to determine the flow rate of the discharged substance and the mass flow rate of the substance entering the safety valve when it is actuated.Proposed a mathematical model to describe the processes occurring in the valve. The model includes a system of differential equations describing the physical laws of conservation in the internal volume of the valve and differential equations, which link the value o

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31

Loktionov, E. Yu, A. V. Ovchinnikov, Yu Yu Protasov, and D. S. Sitnikov. "An investigation of the optical-and-thermophysical and gasdynamic characteristics of femtosecond laser ablation of structural materials of the polymer series." High Temperature 48, no. 5 (2010): 729–40. http://dx.doi.org/10.1134/s0018151x10050159.

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32

T., Raeder, Tenenev V.A., and Chernova A.A. "NUMERICAL SIMULATION OF UNSTABLE MODES FOR A SAFETY VALVE." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 68 (2020): 141–57. http://dx.doi.org/10.17223/19988621/68/13.

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When designing pressure regulators, one needs to have a complete understanding of gasdynamic processes. The numerical algorithm for three-dimensional gas-dynamic modeling of a full cycle of spring safety valve operation is proposed, which allows one to significantly reduce the computing time. Grid reconfiguration during CFD modeling is provided by interpolation procedure using previously calculated grids. Calculations show that gas-dynamic numerical simulation should account for a three-dimensional structure of the unsteady flow and the motion of the disc. These factors are taken into account

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Ivanov, Boris L., Bulat G. Ziganshin, Andrey V. Dmitriev, Maxim A. Lushnov, and Manuel O. Binelo. "Numerical modeling of the effect of energy-separation in the ranque-hilsch tube." BIO Web of Conferences 27 (2020): 00109. http://dx.doi.org/10.1051/bioconf/20202700109.

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Currently, there are a lot of applications of vortex technologies. The vortex effect is used in gasdynamic cold generators and vortex cooling chambers. Vortex devices are also used as dehumidifiers, separators, for cooling and heating hydraulic fluids, separating two-phase media, gas mixtures, evacuating, etc. Scientists study the applicability of vortex equipment for traditional and freeze-drying of agricultural products. However, the influence of geometric parameters of vortex devices on the productivity and energy efficiency of temperature separation of gas flows is poorly studied. Research

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Kengesbekov, Aidar, Bauyrzhan Rakhadilov, Zhuldyz Sagdoldina, Dastan Buitkenov, Yelmurat Dosymov, and Manarbek Kylyshkanov. "Improving the Efficiency of Air Plasma Spraying of Titanium Nitride Powder." Coatings 12, no. 11 (2022): 1644. http://dx.doi.org/10.3390/coatings12111644.

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The operation modes of a plasmatron for powder coating spraying have been studied. The plasmatron has a node of annular input and a gasdynamic focusing of the powder, and the outlet holes of the nozzle-anode are made in the form of rectangular narrowing-expanding channels (No.34334 RK: IPC H05H 1/42). The dynamics and trajectories of the powder particles in the plasmatron were investigated. The paper analyzes the influence of plasmatron arc current and working gas flow rate on the structure and properties of the obtained coatings. It is established that the phase composition of the sprayed coa

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35

Formalev, V. F., S. A. Kolesnik, and B. A. Garibyan. "Analytical Solution of the Problem of Conjugate Heat Transfer between a Gasdynamic Boundary Layer and Anisotropic Strip." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 5 (92) (October 2020): 44–59. http://dx.doi.org/10.18698/1812-3368-2020-5-44-59.

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The paper focuses on the problem of conjugate heat transfer between the thermal-gas-dynamic boundary layer and the anisotropic strip in conditions of aerodynamic heating of aircraft. Under the assumption of an incompressible flow which takes place in the shock layer behind the direct part of the shock wave, we found a new analytical solution for the components of the velocity vector, temperature distribution, and heat fluxes in the boundary layer. The obtained heat fluxes at the interface between the gas and the body are included as boundary conditions in the problem of anisotropic heat conduc

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36

Волков, К. Н., В. Н. Емельянов, А. И. Цветков, and П. С. Чернышов. "Mechanisms of generation and noise sources of supersonic jets and the numerical simulation of their gas dynamic and aeroacoustic characteristics." Numerical Methods and Programming (Vychislitel'nye Metody i Programmirovanie), no. 4 (September 10, 2019): 498–515. http://dx.doi.org/10.26089/nummet.v20r444.

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Интерес к разработке моделей и методов, направленных на изучение механизмов генерации шума в струйных течениях, объясняется постоянно ужесточающимися требованиями по шуму, производимому различными промышленными устройствами. Рассматриваются модели, лежащие в основе вычислительной газовой динамики и аэроакустики, а также интегральные методы расчета шума в дальнем поле и особенности численной реализации соответствующих математических моделей. Возможности разработанных средств численного моделирования демонстрируются на примере расчета шума, генерируемого сверхзвуковыми недорасширенными струями.

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Drozdov, A. A., Yu B. Galerkin, O. A. Solovyeva, K. V. Soldatova, and A. A. Ucehovscy. "Mathematical model of the 9th version Universal modeling method: features and results of identification." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 4, no. 4 (2020): 28–40. http://dx.doi.org/10.25206/2588-0373-2020-4-4-28-40.

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The Universal modeling method is a complex of computer programs for calculating the characteristics and optimal design of centrifugal compressors based on mathematical models of efficiency and head. Practical experience allows improving the mathematical models that underlie the Method. Determining the non-incidence inlet in a blade cascade is an important part of calculating the compressor gasdynamic characteristics. In the 8th version of the Universal modeling method, a formula is used to calculate the direction of the critical stream line, containing an empirical coefficient X. The practice

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Zberovskyi, Vasyl, Ruslan Ahaiev, Vasyl Vlasenko, and Dmytro Prytula. "Hydrodynamic impact as a way of controlling the state of the coal-gas system: analysis and data processing." IOP Conference Series: Earth and Environmental Science 1348, no. 1 (2024): 012039. http://dx.doi.org/10.1088/1755-1315/1348/1/012039.

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Abstract The research results on hydrodynamic impact during the outburst-hazardous coal seams opening at the Donbas Central District mines are considered. Emphasis is placed on the technological processes complexity related to coal mining and the importance of systematic monitoring of the stress-strain state of rock massif. It is noted that the research and optimization of the hydrodynamic impact process parameters and the coal-gas system state require the use of statistical and probabilistic methods, in particular descriptive statistics. An analysis of the hydrodynamic impact process paramete

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39

Kobalava, H., and D. Konovalov. "Numerical simulation of the regime and geometric characteristics influence on the pressure loss of a low-flow aerothermopressor." Refrigeration Engineering and Technology 55, no. 2 (2019): 66–76. http://dx.doi.org/10.15673/ret.v55i2.1355.

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In this paper, a study of gasdynamic processes that occur in a low-flow aerothermopressor has been done. The aerothermopressor is a two-phase jet apparatus for contact cooling, in which, due to the removal of heat from the air flow, the air pressure is increased (thermogasdynamic compression) and its cooling is taken place. Highly effective operation of the aerothermopressor is influenced by primarily the flow part design and the water injected method in the apparatus. Constructive factors that influence energy costs to overcome friction losses and local resistances on the convergent-divergent

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40

Vanyashov, A. D. "Application of methods of recalculation of gasdynamic characteristics of multi-staged and multisection turbocompressors on other conditions of work in various technological installations." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 2, no. 1 (2018): 42–52. http://dx.doi.org/10.25206/2588-0373-2018-2-1-42-52.

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41

KATANODA, Hiroshi, Hideki YAMAMOTO, Takeshi MATSUOKA, and Kazuyasu MATSUO. "Gasdynamic Study on Flow Characteristics of High Velocity Oxy-Fuel Thermal Spray Gun (1st Report, The Influence of Chamber Pressure and Barrel Length)." Transactions of the Japan Society of Mechanical Engineers Series B 72, no. 714 (2006): 271–78. http://dx.doi.org/10.1299/kikaib.72.271.

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42

Yang, Yushun, Dongming Zhang, Yun Dong, et al. "Deformation and seepage properties of raw coal during the simultaneous loading and unloading of axial stress and confining pressure." Physics of Fluids 34, no. 9 (2022): 091904. http://dx.doi.org/10.1063/5.0120683.

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The mining of coal resources causes the stress on the front and both sides of the working face to be in a complex loading and unloading process, and the gas contained in the coal body migrates, which can cause gasdynamic disasters in severe cases. Therefore, this study designed a three-dimensional stress path based on the in situ stress distribution characteristics of the No. 2461 working face and conducted the experiment on the deformation and seepage characteristics of raw coal under simultaneous unloading (loading) axial stress and loading (unloading) confining pressure. It is considered th

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Mileshin, V. I., S. V. Pankov, V. A. Fateyev, and S. K. Shchipin. "Optimization of ducted counter–rotating fan blades on the basis of solving a 3d inverse problem with the aim of improving fan gasdynamic characteristics." VESTNIK of Samara University. Aerospace and Mechanical Engineering 17, no. 1 (2018): 72. http://dx.doi.org/10.18287/2541-7533-2018-17-1-72-86.

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Volkov, V. F. "Mathematical simulation of a supersonic flow around complex objects. Influence of the position of a wing on the gasdynamic characteristics of a complex object." Journal of Engineering Physics and Thermophysics 79, no. 3 (2006): 467–75. http://dx.doi.org/10.1007/s10891-006-0123-0.

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Camps-Fariña, A., A. C. Raga, and A. Noriega-Crespo. "Parameters and models of the jets from Sanduleak’s star in the LMC." Astronomy & Astrophysics 619 (October 30, 2018): A11. http://dx.doi.org/10.1051/0004-6361/201832941.

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Context. Angeloni and collaborators have discovered a bipolar jet extending out to ~6 pc from “Sanduleak’s star” in the Large Magellanic Cloud (LMC). This is the first angularly resolved stellar jet system that has been observed outside our Galaxy. Aims. In this paper we use archival Hubble Space Telescope (HST) images of this jet in order to estimate the flow parameters, and use them to explore two possible theoretical scenarios for modelling this bipolar outflow. Methods. We have computed axisymmetric gasdynamic simulations of a conical outflow with an opening angle that increases with time

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Chen, Kuangshi, Jinglei Xu, Qihao Qin, and Shuai Huang. "Analytical solution of supersonic axisymmetric flow around a sharp convex corner." Physics of Fluids 35, no. 1 (2023): 016118. http://dx.doi.org/10.1063/5.0134698.

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Supersonic axisymmetric expansion flow is a typical and fundamental issue in gas dynamics. It plays a vital role in the high-speed external and internal flow fields regarding the contour design and performance evaluation of supersonic/hypersonic vehicles and their propulsion systems. The supersonic two-dimensional (2D) planar expansion flow is dominated by the well-known Prandtl–Meyer (P–M) theory. However, no similar explicit relation exists for the supersonic axisymmetric expansion flow, and only the computational fluid dynamics results could be employed at present. Therefore, this work focu

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Sofiiskyi, Kostiantyn, Vasyl Zberovskyi, Anatolii Yalanskyi, and Oleksii Yalanskyi. "Conceptual tendencies to analyze coal-gas system state under the hydroimpulsive effect." E3S Web of Conferences 123 (2019): 01026. http://dx.doi.org/10.1051/e3sconf/201912301026.

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The paper considers conceptual tendencies concerning the analysis of coal-gas system state within rock mass in front of a mine working stope in the context of hydroimpulsive effect on an outburst-prone coal seam. It has been shown that mining intensification is impossible without the improved efficiency of means indented to avoid gasdynamic phenomena taking into consideration the effect of technogenic factors on operation schedules. It has been determined that since grades of outburst-prone coal are of globular structure, its breakage may involve changes in molecular weight of coal substance a

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Rebone, Vitalii K., Mikhail A. Rotinyan, Igor' A. Fedorov, and A. M. Krivitskii. "Influence of the secondary-fuel feed method on the energy and gasdynamic characteristics of a supersonic cw chemical HF laser with a radial-expansion nozzle array." Quantum Electronics 28, no. 5 (1998): 394–96. http://dx.doi.org/10.1070/qe1998v028n05abeh001233.

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Baskaev, P. Yu, A. V. Lavrov, and V. V. Lobachev. "Characteristics of the structure of the phase inhomogeneity and of nonequilibrium of the active medium beyond a three-dimensional expansion nozzle array of a gasdynamic laser." Quantum Electronics 28, no. 6 (1998): 492–96. http://dx.doi.org/10.1070/qe1998v028n06abeh001256.

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Rebone, Vitalii K., Mikhail A. Rotinyan, Igor' A. Fedorov, A. M. Krivitskii, and M. V. Moroz. "Influence of the Mach number of the oxidant flow on the energy and gasdynamic characteristics of a supersonic cw chemical HF laser with a radial-expansion nozzle array." Quantum Electronics 28, no. 2 (1998): 112–15. http://dx.doi.org/10.1070/qe1998v028n02abeh001159.

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