Приказ основних података о документу
Numeričko istraživanje stišljivog turbulentnog vihornog strujanja sa raslojavanjem polja totalne temperature u cevi
Numerical research of compressible turbulent swirl flow with energy separation in a cylindrical tube
dc.creator | Burazer, Jela M. | |
dc.creator | Novković, Đorđe | |
dc.creator | Knežević, Darko M. | |
dc.creator | Lečić, Milan | |
dc.date.accessioned | 2022-09-19T18:42:11Z | |
dc.date.available | 2022-09-19T18:42:11Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 1451-2092 | |
dc.identifier.uri | https://machinery.mas.bg.ac.rs/handle/123456789/3040 | |
dc.description.abstract | Cilj ovog rada je numerička analiza fenomena raslojavanja polja totalne temperature u turbulentnom stišljivom vihornom strujanju u cilindričnoj cevi. U tom smislu, raslojavanje polja totalne temperature u vrtložnoj cevi sa potpuno zatvorenim otvorom za izlaz ohlađenog gasa se analizira numeričkim putem primenom softverom otvorenog tipa - OpenFOAM. Validacija dobijenih numeričkih rezultata je vršena poređenjem sa vrednostima dobijenim eksperimentalnim putem. Za numeričke proračune koriste se dvojednačinski model (standardni k-ε) i puni naponski model turbulencije (LRR). Proračunski domen se smatra dvodimenzionalnim, a radni fluid - vazduh tretira se kao kalorički idealni gas. Uticaj broja ćelija u mreži je izvršen pomoću četiri različite veličine mreže. Raspodele jačine vihora, srednjeg vihora i ugaone brzine jasno ukazuju na uticaj prisustva vihora u strujnom polju. Sa druge strane, združeno sa njihovom vrednošću upućuju i na fiziku ovog izuzetno kompleksnog strujno-termodinamičkog fenomena kakav je fenomen raslojavanja polja totalne temperature. Na osnovu vrednosti i raspodela ovih strujnih veličina, izvršeno je i poređenje između stišljivog i nestišljivog turbulentnog vihornog strujanja. | sr |
dc.description.abstract | The aim of this paper is to numerically analyze the energy separation phenomenon in turbulent compressible swirling flow in a cylindrical tube. In that sense, the energy separation in a vortex tube with orifice at cold end closed completely is examined numerically using OpenFOAM software. Obtained results are validated with the experimental ones. For numerical calculations, both two-equation (standard k-ε) and full Reynolds stress turbulence models (LRR) are used. The computational domain is considered to be two-dimensional, and the working fluid - air is treated as calorically perfect gas. Mesh independence test is carried out for four different mesh sizes. Distributions of swirling flow intensity, average swirl and angular velocity clearly show the influence of the swirl presence in the flow. The values of these quantities point to the physics of this extremely complex flow-thermodynamic phenomenon, such is the energy separation. Based on values and distributions of these flow quantities a comparison between incompressible and compressible turbulent swirling flow is performed. | en |
dc.publisher | Univerzitet u Beogradu - Mašinski fakultet, Beograd | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/35046/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/33046/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | FME Transactions | |
dc.subject | vortex tube | en |
dc.subject | turbulence | en |
dc.subject | swirl | en |
dc.subject | OpenFOAM | en |
dc.subject | energy separation | en |
dc.title | Numeričko istraživanje stišljivog turbulentnog vihornog strujanja sa raslojavanjem polja totalne temperature u cevi | sr |
dc.title | Numerical research of compressible turbulent swirl flow with energy separation in a cylindrical tube | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.epage | 22 | |
dc.citation.issue | 1 | |
dc.citation.other | 47(1): 16-22 | |
dc.citation.rank | M24 | |
dc.citation.spage | 16 | |
dc.citation.volume | 47 | |
dc.identifier.doi | 10.5937/fmet1901016B | |
dc.identifier.fulltext | http://machinery.mas.bg.ac.rs/bitstream/id/1713/3037.pdf | |
dc.identifier.scopus | 2-s2.0-85063285783 | |
dc.identifier.wos | 000453324000003 | |
dc.type.version | publishedVersion |