{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361975843659232000.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1063/1.5100643"}},{"identifier":{"@type":"URI","@value":"https://pubs.aip.org/aip/pof/article-pdf/doi/10.1063/1.5100643/14059247/071701_1_online.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Development of specific structures occurring from hyper-breakable vorticity"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The spatial development of hyperbreakable vorticity in a supersonic coaxial flow with an annular swirl is investigated using direct numerical simulation at Mach number 1.5. The results show that the unstable modes originate from inside and outside the vortex depending on the ratio of vorticity thicknesses and then specific structures develop with small scales as distinct from conventional shear flows; furthermore, the evolutions lead to generate a number of fine scales due to the secondary instability. The mechanism is caused by the instability due to the helicity profile in addition to the barotropic instability based on the inflection point of the inner vorticity. This study strongly indicates that rapid evolutions on a plane perpendicular to the streamwise direction are insensitive to compressibility effects in supersonic flows. Therefore, the novel vorticity is found to undergo a breakdown at a short distance.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420282801188186880","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"60316007"},{"@type":"NRID","@value":"1000060316007"},{"@type":"NRID","@value":"9000002568852"},{"@type":"NRID","@value":"9000019993756"},{"@type":"NRID","@value":"9000408882504"},{"@type":"NRID","@value":"9000408882502"},{"@type":"NRID","@value":"9000003810617"},{"@type":"NRID","@value":"9000256238337"},{"@type":"NRID","@value":"9000308044545"},{"@type":"NRID","@value":"9000258285332"},{"@type":"NRID","@value":"9000392221865"},{"@type":"NRID","@value":"9000408818194"},{"@type":"NRID","@value":"9000408818195"},{"@type":"NRID","@value":"9000308715966"},{"@type":"NRID","@value":"9000308714937"},{"@type":"NRID","@value":"9000330666978"},{"@type":"NRID","@value":"9000408881032"},{"@type":"NRID","@value":"9000408881035"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0055751"}],"foaf:name":[{"@value":"Toshihiko Hiejima"}],"jpcoar:affiliationName":[{"@value":"Department of Aerospace Engineering, Osaka Prefecture University , 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"10706631"},{"@type":"EISSN","@value":"10897666"}],"prism:publicationName":[{"@value":"Physics of Fluids"}],"dc:publisher":[{"@value":"AIP Publishing"}],"prism:publicationDate":"2019-07-01","prism:volume":"31","prism:number":"7"},"reviewed":"false","url":[{"@id":"https://pubs.aip.org/aip/pof/article-pdf/doi/10.1063/1.5100643/14059247/071701_1_online.pdf"}],"createdAt":"2019-07-16","modifiedAt":"2023-08-03","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000781992778112","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"18H01626"},{"@type":"JGN","@value":"JP18H01626"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18H01626/"}],"notation":[{"@language":"ja","@value":"燃料濃度場・速度場同時計測による超音速縦渦混合過程の解明と混合促進法の提案"},{"@language":"en","@value":"Clarification of Supersonic Mixing of Streamwise Vortices by Simultaneous Measurement of Fuel concentration and Velocity, and Propose of Mixing Enhancement"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256942123008","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"17K05145"},{"@type":"JGN","@value":"JP17K05145"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17K05145/"}],"notation":[{"@language":"ja","@value":"高マッハ数における革新的な乱れの成長促進の創出を目指した縦渦遷移の研究"},{"@language":"en","@value":"Study on transition processes of streamwise vortices aimed at an innovative creation for the growth of perturbations in a high Mach number"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360005516592783872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"On the rapid breakdown of supersonic streamwise vortices with opposite sign double annular vorticity"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708893758592","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Instability of isolated hollow vortices with zero circulation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292619346502528","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Transition and acoustic response of recirculation structures in an unconfined co-axial isothermal swirling flow"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292619514222464","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Vortex Burst as a Source of Turbulence"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292619956428160","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Inviscid instability of compressible swirling mixing layers"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574093847405568","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Mechanics of the Turbulent-Nonturbulent Interface of a Jet"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570929002240","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Viscous and inviscid spatial stability analysis of compressible swirling mixing layers"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137043912323328","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Instabilities of variable-density swirling flows"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044319021440","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Structural and mixing characteristics influenced by streamwise vortices in supersonic flow"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137046328942208","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Vortex structure and dynamics in the near field of a coaxial jet"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418520901250048","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Coupling between a coherent structure and fine-scale turbulence"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699994228890496","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Dynamics of swirling jet flows"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699995942407168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Three-dimensional evolution of large-scale vortices in supersonic flow"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981470178553088","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Characteristics of mixing enhanced by streamwise vortices in supersonic flow"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981471440098688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The compressible turbulent shear layer: an experimental study"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262943418074496","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Mechanisms of decay of laminar and turbulent vortices"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262946072888832","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Breaking of rotational symmetry in a swirling jet experiment"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544418977568128","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Correlation of swirl number for a radial-type swirl generator"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388843595291648","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Tripolar vortices in a rotating fluid"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388844349665920","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Flow in a Turbulent Trailing Vortex"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388845403301504","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Mixing in coaxial jets"}]},{"@id":"https://cir.nii.ac.jp/crid/1363670318621534848","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Stability of compressible streamwise vortices"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951793799950208","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A unified criterion for the centrifugal instabilities of vortices and swirling jets"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233269207942400","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Coaxial jets with and without swirl"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1063/1.5100643"},{"@type":"KAKEN","@value":"PRODUCT-22946601"},{"@type":"KAKEN","@value":"PRODUCT-22640943"},{"@type":"OPENAIRE","@value":"doi_dedup___::0f75a9494b71b31a0811b81df06ec9ca"},{"@type":"CROSSREF","@value":"10.1016/j.actaastro.2019.12.018_references_DOI_OVDIkJmpWeK8v5rjy5JKP9gLVi3"}]}