DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Sanghoon | ko |
dc.contributor.author | Kim, Ikhyun | ko |
dc.contributor.author | Park, Gisu | ko |
dc.contributor.author | Lee, Jong Kook | ko |
dc.contributor.author | Kim, Jae Gang | ko |
dc.date.accessioned | 2020-11-30T08:30:18Z | - |
dc.date.available | 2020-11-30T08:30:18Z | - |
dc.date.created | 2020-09-25 | - |
dc.date.issued | 2020-10 | - |
dc.identifier.citation | PLOS ONE, v.15, no.10, pp.1 - 24 | - |
dc.identifier.issn | 1932-6203 | - |
dc.identifier.uri | http://hdl.handle.net/10203/277753 | - |
dc.description.abstract | A thermochemical nonequilibrium analysis was performed under the low enthalpy shock-tunnel flows. A quasi-one-dimensional flow calculation was employed by dividing the flow calculations into two parts, for the shock-tube and the Mach 6 nozzle. To describe the thermochemical nonequilibrium of the low enthalpy shock-tunnel flows, a three-temperature model is proposed. The three-temperature model treats the vibrational nonequilibrium of O-2 and NO separately from the single nonequilibrium energy mode of the previous two-temperature model. In the three-temperature model, electron-electronic energies and vibrational energy of N-2 are grouped as one energy mode, and vibrational energies of O-2, O-2(+), and NO are grouped as another energy mode. The results for the shock-tunnel flows calculated using the three-temperature model were then compared with existing experimental data and the results obtained from one- and two-temperature models, for various operating conditions of the K1 shock-tunnel facility. The results of the thermochemical nonequilibrium analysis of the low enthalpy shock-tunnel flows suggest that the nonequilibrium characteristics of N-2 and O-2 need to be treated separately. The vibrational relaxation of O-2 is much faster than that of N-2 in low enthalpy condition, and the dissociation rate of O-2 is manly influenced by the species vibrational temperature of O-2. The proposed three-temperature model is able to describe the thermochemical nonequilibrium characteristics of N(2)and O-2 behind the incident and reflected shock waves, and the rapid vibrational freezing of N-2 in nozzle expanding flows. | - |
dc.language | English | - |
dc.publisher | PUBLIC LIBRARY SCIENCE | - |
dc.title | Thermochemical Nonequilibrium Flow Analysis in Low Enthalpy Shock-Tunnel Facility | - |
dc.type | Article | - |
dc.identifier.wosid | 000581808000046 | - |
dc.identifier.scopusid | 2-s2.0-85092674827 | - |
dc.type.rims | ART | - |
dc.citation.volume | 15 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 1 | - |
dc.citation.endingpage | 24 | - |
dc.citation.publicationname | PLOS ONE | - |
dc.identifier.doi | 10.1371/journal.pone.0240300 | - |
dc.contributor.localauthor | Park, Gisu | - |
dc.contributor.nonIdAuthor | Lee, Jong Kook | - |
dc.contributor.nonIdAuthor | Kim, Jae Gang | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | VIBRATIONAL NONEQUILIBRIUM | - |
dc.subject.keywordPlus | EQUATIONS | - |
dc.subject.keywordPlus | AIR | - |
dc.subject.keywordPlus | CONDENSATION | - |
dc.subject.keywordPlus | RELAXATION | - |
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