{"created":"2023-05-15T14:58:23.472516+00:00","id":79219,"links":{},"metadata":{"_buckets":{"deposit":"758e20a1-d2bf-4492-9d0e-f46e35a5370a"},"_deposit":{"created_by":1,"id":"79219","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"79219"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00079219","sets":["1"]},"author_link":["867327","867333","867331","867332","867329","867330","867326","867328","867334"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-03","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"6","bibliographicVolumeNumber":"60","bibliographic_titles":[{"bibliographic_title":"Nuclear Fusion"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Flux-driven ion temperature gradient (ITG) turbulence and associated transport regulated by non-local and non-diffusive processes are investigated based on GKNET simulations in a global toroidal geometry. Among these processes, the instantaneous formation of radially extended quasi-coherent structure, which leads to the transport burst, is found to play an important role in causing global profile formation and relaxation. To elucidate the characteristics of such a transport process, we introduce the size probability distribution function (size-PDF) P(S) to analyze heat flux eddies in the real space, with S the eddy size, incorporated with Fourier-based approaches in spectral space. In the size-PDF to the quiescent phase, P(S) is found to be fitted by three piecewise power laws which transitions at two typical sizes S_a and S_b as P∝S^(-2/3)  (S≤S_a), P∝S^(-2) (S_a≤S≤S_b), and P∝S^(-4)  (S≥S_b), where S_a~50 and S_b~200 in squared gyro-radius unit ρ_i^2 for the system with a⁄ρ_i ~225 (a: the minor radius). On the other hand, the size-PDF in the bursting phase exhibits non-power law irregular humps corresponding to the quasi-coherent structure for S≥S_b reaching to S~1500. Such a coherent structure is ascribed to the spontaneous alignment of smaller scale eddies through phase matching in radial direction, which is classified as a quasi-deterministic process. Resultantly, a large amount of free energy is extracted from the system due to subsequent growth of the event, by which a self-organized profile is established. The coherent structure is then readily disintegrated by self-generated zonal flows, so that the energy is transferred to smaller eddies, by which the quasi-probabilistic transport including SOC type avalanche is induced on the profile. To conclude, the transport is found to be regulated by the mixture of a quasi-deterministic and a probabilistic process, which leads to stiffness and resilience in the profile formation and self-similarity in the relaxation.","subitem_description_type":"Abstract"}]},"item_8_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IOP(Institute of Physics) Publishing"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1088/1741-4326/ab7892","subitem_relation_type_select":"DOI"}}]},"item_8_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://iopscience.iop.org/article/10.1088/1741-4326/ab7892","subitem_relation_type_select":"URI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0029-5515","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Wang, Wei"}],"nameIdentifiers":[{"nameIdentifier":"867326","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kishimoto, Yasuaki"}],"nameIdentifiers":[{"nameIdentifier":"867327","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Imadera, Kenji"}],"nameIdentifiers":[{"nameIdentifier":"867328","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Liu, Hairui"}],"nameIdentifiers":[{"nameIdentifier":"867329","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Li, Jiquan"}],"nameIdentifiers":[{"nameIdentifier":"867330","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yagi, Masatoshi"}],"nameIdentifiers":[{"nameIdentifier":"867331","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Wang, Zhengxiong"}],"nameIdentifiers":[{"nameIdentifier":"867332","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Wang, Wei","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"867333","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yagi, Masatoshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"867334","nameIdentifierScheme":"WEKO"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Statistical study for ITG turbulent transport in flux-driven tokamak plasmas based on global gyro-kinetic simulation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Statistical study for ITG turbulent transport in flux-driven tokamak plasmas based on global gyro-kinetic simulation"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-03-06"},"publish_date":"2020-03-06","publish_status":"0","recid":"79219","relation_version_is_last":true,"title":["Statistical study for ITG turbulent transport in flux-driven tokamak plasmas based on global gyro-kinetic simulation"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T21:56:26.671499+00:00"}