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Problems of coordinating the solutions of quasigasdynamic equations with results of molecular-dynamic calculations in analysis of real gas flows

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dc.contributor.authorPodryga, V. O.
dc.contributor.authorPolyakov, S. V.
dc.contributor.authorПоляков, Сергей Владимирович
dc.date.accessioned2024-11-20T10:54:18Z
dc.date.available2024-11-20T10:54:18Z
dc.date.issued2019
dc.description.abstract© Published under licence by IOP Publishing Ltd. This paper is devoted to the numerical study of complex gas-dynamic processes in microchannels of technical systems. The analysis is carried out on the basis of the equations of quasigasdynamics, taking into account the real dependences of the equation of state and kinetic coefficients on temperature and pressure, as well as the realistic description of the channel walls. As an example, the flow of nitrogen in the nickel channel of the actual structure is selected. The task is considered in the context of a multiscale approach. The main idea of this approach is to combine models of continuum with models of particles. Combining models is implemented in the framework of the method of splitting by physical processes. The correctness of this approach is ensured by the selection of suitable time intervals and the conjugation of scale levels. The goal is to develop a numerical algorithm that integrates grid methods for solving quasigasdynamic equations and molecular dynamics method, allowing to take into account the properties of real substances in the general model. In work the method of coordination of numerical solutions at different scale levels in time and space is investigated. Based on the proposed methodology, direct molecular modeling of the flow in the channel was carried out and data were prepared for calculating such a flow using the equations of quasigasdynamics. The study confirmed the possibility of synthesizing these two numerical methods.
dc.identifier.citationPodryga, V. O. Problems of coordinating the solutions of quasigasdynamic equations with results of molecular-dynamic calculations in analysis of real gas flows / Podryga, V.O., Polyakov, S.V. // Journal of Physics: Conference Series. - 2019. - 1158. - № 4. - 10.1088/1742-6596/1158/4/042001
dc.identifier.doi10.1088/1742-6596/1158/4/042001
dc.identifier.urihttps://www.doi.org/10.1088/1742-6596/1158/4/042001
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85063766885&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000560244900097
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16843
dc.relation.ispartofJournal of Physics: Conference Series
dc.titleProblems of coordinating the solutions of quasigasdynamic equations with results of molecular-dynamic calculations in analysis of real gas flows
dc.typeConference Paper
dspace.entity.typePublication
oaire.citation.issue4
oaire.citation.volume1158
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