-
41
Design of compressor unit based on wave compressor with magnetoelectric drive for extraction of hydrocarbons in Arctic shelf
Published 2019-10-01“…The efficiency criteria for the Arctic gas-producing complexes are satisfied by a compressor based on the gas-dynamic vibration scheme, the principle of kinetic compression and volumetric gas injection during oscillatory movement of the piston-nozzle in the sound frequency range. …”
Get full text
Article -
42
A Time-Discontinuous Galerkin Finite Element Method for the Solution of Impact Problem of Gas-Saturated Coal
Published 2020-01-01“…The results can provide a technological basis for the research of the prevention of coal and gas dynamic disasters under deep mining. And the method could be useful for the further numerical research of coal-rock-gas coupling problems and coal-gas-heat coupling problems subjected to impact loading.…”
Get full text
Article -
43
The influence of reality gas calculation methods on the gasdynamic characteristics of a gas pumping unit centrifugal compressor
Published 2024-10-01“…In this paper, a comparison of four methods is presented, and the calculation of a centrifugal compressor is performed taking into account the values of the compressibility factor obtained according to these methods. The calculated gas dynamic characteristics are compared with experimental data and discrepancies are revealed at different rotor speeds.…”
Get full text
Article -
44
Possibilities for the Application of Low-Temperature Argon Plasma in the Treatment of Postoperative and Long-Term Non-Healing Wounds
Published 2020-01-01“…Its therapeutic effect is achieved by means of the gas-dynamic effect, i.e. an argon flow with a high heat content and wide-spectrum recombination radiation — from the vacuum ultraviolet region to the near infrared range, as well as by means of the pronounced catalytic properties of gaseous argon, which is important for a number of biochemical reactions. …”
Get full text
Article -
45
I. Ivkovic-Kihic, M. Read, Sh. Rane, A. Kovacevic. «Compressors and their systems». Post conference report / trans. from Engl. M. A. Fedorova
Published 2022-03-01“…In addition, within the framework of the conference, a traditional short training course and a Forum on CFD (gas dynamic calculations) in rotary positive displacement machines were held. …”
Get full text
Article -
46
METHODOLOGY FOR RAPID DETECTION OF ABNORMAL GAS SITUATIONS AT THE EXCAVATION SITES OF MINES
Published 2020-05-01“…The following provisions were applied: the appearance of abnormal gas situations leads to a rupture of the interaction of gas dynamic processes at the sites of recording methanegrams, and the presence of a link indicates a «regular» development of situations. …”
Get full text
Article -
47
Experimental Study on Directional Fracture Blasting of Cutting Seam Cartridge
Published 2019-01-01“…The research results show that during cartridge explosion, the cutting seam pipe can effectively control the energy release and detonation gas dynamic behaviors. Additionally, the cartridge blast wave and the detonation gas remain highly symmetrical in expansion form. …”
Get full text
Article -
48
New version of Universal modeling method for centrifugal compressors calculation development
Published 2019-06-01“…Similarity theory principles are widely applied in gas dynamic design. But completely new solutions must be realized on a base of engineering approaches to predict performances. …”
Get full text
Article -
49
Verification of Thermal Models of Internally Cooled Gas Turbine Blades
Published 2018-01-01“…The verification is usually performed on the basis of results of test of full-size blade prototype on a gas-dynamic test bench. A method of calorimetric measurement in a molten metal thermostat for verification of a thermal model of cooled blade is proposed in this paper. …”
Get full text
Article -
50
Damage Characteristics Caused by Deep-Hole Blasting near Normal Fault and Its Effects on Coal and Gas Outbursts
Published 2022-01-01“…The research results will provide a theoretical basis for gas dynamic disasters induced by blasting disturbance in normal fault structures. …”
Get full text
Article -
51
Mathematical model of the 9th version Universal modeling method: features and results of identification
Published 2020-12-01“…Determining the non-incidence inlet in a blade cascade is an important part of calculating the compressor gas-dynamic 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. …”
Get full text
Article -
52
Improving the quality of design calculations of viscous flow in low-flow centrifugal compressor stages by methods of computational fluid dynamics through reasonable application of...
Published 2021-04-01“…For highReynolds turbulence models, at values of y+=25...50 on all friction surfaces of the computational domain in the optimal mode of operation, the grid independence of the solution for the entire gas-dynamic characteristic is ensured. It is unacceptable for y+ to fall into the transition region of 4...15 between the viscous sublayer and the region of the logarithmic velocity profile.…”
Get full text
Article -
53
About the modeling of light beam self-focusing in plasma at the irradiation of the target by power UV laser
Published 2021-03-01“…Numerical simulations were carried out on the gas-dynamic profiles (linear and exponential). It was shown that thermal self-focusing could develop at the conditions of “GARPUN” experiments (~ 1 mm longitudinal plasma, moderate radiation intensity: 1011–1012(W/cm2) × µm2). …”
Get full text
Article -
54
Experimental Study of Methods of Increasing the Efficiency of a Direct-Flow Air-Jet Detonation Engine
Published 2023-06-01“…At such a rate of fuel energy release, the thermo-gas dynamic characteristics of the engine are improved, the prerequisites are created for simplifying the design of the combustion chamber, reducing the size, volume, and weight of the engine, improving thermodynamic efficiency, a significant gain in technical characteristics and a high degree of structural perfection of promising engine installations. …”
Get full text
Article -
55
Analysis of the Effectiveness of Variants of the Exhaust Compartment of a Steam Turbine
Published 2020-08-01“…The results of a numerical study of the gas-dynamic and power characteristics of the exhaust compartment of low-pressure cylinder, including the last stage with a blade of 1100 mm length and the exhaust path, in terms of their interaction are presented. …”
Get full text
Article