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dc.contributor.authorDai, Yuchen
dc.contributor.authorKlimenko, Alexander
dc.contributor.authorLu, Yuanshen
dc.contributor.authorHooman, Kamel
dc.date.accessioned2022-05-13T05:55:04Z
dc.date.available2022-05-13T05:55:04Z
dc.date.issued2021
dc.identifier.issn2469-990Xen_US
dc.identifier.doi10.1103/PhysRevFluids.6.094604en_US
dc.identifier.urihttp://hdl.handle.net/10072/414562
dc.description.abstractGoverning equations of swirling turbulent buoyant plumes rising from horizontal circular sources into a stationary surrounding are established with the plume function considered. In an attempt to find out the analytical solutions for both lazy and forced plumes, we derive the asymptotic approximations with first-order expansions for all swirling plume variables, including the radius, swirl ratio, axial velocity, and temperature, by applying regular perturbation methods with the swirl term being the perturbative part. Finally, the asymptotic solutions are compared with the numerical evaluations conducted through the fourth-order Runge-Kutta method. The results show that, for lazy plumes, the zeroth-order expansions are good enough to approximate the solutions for each variable, while the first-order expansions are found to match the numerical solution much better for forced plumes, indicating that swirling motions slightly influence lazy plumes but largely affect forced ones. It is also found that, in the presence of swirls, the plume radius slightly increases, while the centerline axial velocity decreases and the temperature barely changes, in both lazy and forced plumes. Additionally, as the input plume function value increases, the swirl ratio decays faster and further decreases the impact on other variables. Especially, a swirl can even turn a moderate forced plume into a lazy plume due to the dominated perturbative part in the near field, which might cause the method for categorizing plumes to be called into question.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofpagefrom094604en_US
dc.relation.ispartofissue9en_US
dc.relation.ispartofjournalPhysical Review Fluidsen_US
dc.relation.ispartofvolume6en_US
dc.subject.fieldofresearchMechanical engineeringen_US
dc.subject.fieldofresearchClassical physicsen_US
dc.subject.fieldofresearchApplied mathematicsen_US
dc.subject.fieldofresearchcode4017en_US
dc.subject.fieldofresearchcode5103en_US
dc.subject.fieldofresearchcode4901en_US
dc.subject.keywordsScience & Technologyen_US
dc.subject.keywordsPhysical Sciencesen_US
dc.subject.keywordsPhysics, Fluids & Plasmasen_US
dc.subject.keywordsPhysicsen_US
dc.subject.keywordsCONVECTIONen_US
dc.titleAsymptotic approximations for swirling turbulent plume rising from circular sourcesen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationDai, Y; Klimenko, A; Lu, Y; Hooman, K, Asymptotic approximations for swirling turbulent plume rising from circular sources, Physical Review Fluids, 2021, 6 (9), pp. 094604en_US
dc.date.updated2022-05-12T04:10:51Z
dc.description.versionVersion of Record (VoR)en_US
gro.rights.copyright© 2021 American Physical Society. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_US
gro.hasfulltextFull Text
gro.griffith.authorDai, Yuchen


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