Dreus A.Y.,Syasev V.A.,Dziuba S.V.,Kyrychko S.N. Investigation of methane concentration impact on the regime of the air-methane mixture flowing in the microchannels

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Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 136

Geoteh. meh. 2017, 136, 51-59

INVESTIGATION OF METHANE CONCENTRATION IMPACT ON THE REGIME OF THE AIR-METHANE MIXTURE FLOWING IN THE MICROCHANNELS

¹Dreus A.Y., ¹Syasev V.A., ²Dziuba S.V., ²Kyrychko S.N.
¹State HEI «Oles Honchar DNU», ²IGTM NAS of Ukraine

UDC 622.411.332:533.17

Abstract. Annotation. In this work, approaches to modeling regimes of air-methane mixtures flowing with taking into consideration methane concentration are analyzed. Method for determining changes of regimes of mixture flowing in the microchannels is proposed, and regularities of flow regime changes depending on pressure drop and methane concentration are established. As a result of the researches, it is shown that increase of methane percentage in the mixture leads to increase of limits of viscosity and molecular flow regimes. Boundaries of transition from molecular flow regime to the intermediate one and from intermediate flow regime to the viscous one at different methane concentrations in the mixture are presented. The obtained results are useful for calculating gas escaping through the leaks in the pipelines, fuel tanks and hermetically sealed equipment, as well as for predicting atmosphere state in coalmine tunnels.
Keywords: Keywords: air-methane mixture, gas flows, microchannel, flow regimes, concentrations of methane.

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 About the authors:

Dreus Andrii Yulievich, Candidate of Technical Sciences (Ph.D), associate professor of Fluid Mechanics and Energy and Mass transfer Department, Oles Honchar Dnipro National University (SHEI «Oles Honchar DNU»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Syasev Valerii Opanasovich, Candidate of Technical Sciences (Ph.D), associate professor of Fluid Mechanics and Energy and Mass transfer Department, Oles Honchar Dnipro National University (SHEI «Oles Honchar DNU»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Dziuba Sergii Vladimirovich, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Geodynamic System and Vibration Technologies, Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Kyrychko Sergii Nikolaievich, Candidate of Technical Sciences (Ph.D.), Junior Researcher in Department of Geodynamic System and Vibration Technologies, Institute of Geotechnical Mechanics name by N. Polyakov of National Academy of Sciences of Ukraine (IGTM, NASU), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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