{"created":"2023-06-20T15:13:06.165188+00:00","id":10058,"links":{},"metadata":{"_buckets":{"deposit":"7cab60b5-b213-41a1-956f-63fe271cbe43"},"_deposit":{"created_by":3,"id":"10058","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"10058"},"status":"published"},"_oai":{"id":"oai:ynu.repo.nii.ac.jp:00010058","sets":["495:496"]},"author_link":["34964","36035","36036"],"item_2_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-11-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"279","bibliographicPageStart":"264","bibliographicVolumeNumber":"396","bibliographic_titles":[{"bibliographic_title":"Journal of Computational Physics"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"There are growing attentions to providing a simple and accurate shock detection method for computational fluid dynamics, not only for identifying the shocks in the post-processing but also for developing low-dissipation numerical schemes. However, most of conventional methods are designed for only either of them, as represented by Kanamori-Suzuki sensor and Ducros sensor [1999]. The former method is quite accurate in inviscid flows but rather expensive to be incorporated into a numerical scheme, whereas the latter is very efficient and widely used while calling for an expert's care in determining actual shocks. In order to achieve both efficiency and theoretical accuracy, we developed a novel shock detection method for two-dimensional viscous/inviscid flows on Cartesian grids based on Canny-Edge-Detection, which is a well-known image processing method. We successfully applied the Canny-Edge-Detection to computational fluid dynamics (CFD) solutions by replacing the brightness value of digital images with pressure in CFD solutions. Then, by taking advantages of the simplicity of Canny-Edge-Detection along with Rankine-Hugoniot conditions across shocks (where 50% deviation is intentionally allowed only within the numerically captured shock), our method is designed to be both efficient and theoretically accurate, in contrast with the conventional schemes. The detection results of our method are examined in selected three test cases, in comparison with the Kanamori-Suzuki sensor and the Ducros sensor. Through the tests, we confirmed that our sensor is as accurate as Kanamori-Suzuki method, while as cheap as the Ducros sensor. In addition, the present sensor successfully detects shocks even in a viscous flow, and smoothly represents shocks oblique to the grid lines. Therefore, our sensor is eventually expected to contribute not only to the post-processing in CFD but also to developing schemes for computing high-speed flows with low cost and high accuracy.","subitem_description_type":"Abstract"}]},"item_2_publisher_35":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Elsevier"}]},"item_2_relation_13":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1016/j.jcp.2019.06.071","subitem_relation_type_select":"DOI"}}]},"item_2_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00696013","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00219991","subitem_source_identifier_type":"ISSN"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Yokohama National University"}]},"item_2_version_type_18":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"R.Fujimoto, Takeshi"}],"nameIdentifiers":[{"nameIdentifier":"36035","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kawasaki, Taro"}],"nameIdentifiers":[{"nameIdentifier":"36036","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kitamura, Keiichi"}],"nameIdentifiers":[{"nameIdentifier":"34964","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"20402547","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=20402547"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-23"}],"displaytype":"detail","filename":"1-s2.0-S0021999119304796-main.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"1-s2.0-S0021999119304796-main.pdf","url":"https://ynu.repo.nii.ac.jp/record/10058/files/1-s2.0-S0021999119304796-main.pdf"},"version_id":"f5b1a357-7d7c-4e02-98c3-d474659ef17f"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"CFD","subitem_subject_scheme":"Other"},{"subitem_subject":"Shock sensorImage processing","subitem_subject_scheme":"Other"},{"subitem_subject":"Compressible flow","subitem_subject_scheme":"Other"},{"subitem_subject":"Aerodynamics","subitem_subject_scheme":"Other"},{"subitem_subject":"Canny-Edge-Detection","subitem_subject_scheme":"Other"}]},"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":"Canny-Edge-Detection/Rankine-Hugoniot-conditions unified shock sensor for inviscid and viscous flows","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Canny-Edge-Detection/Rankine-Hugoniot-conditions unified shock sensor for inviscid and viscous flows"}]},"item_type_id":"2","owner":"3","path":["496"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-08-23"},"publish_date":"2019-08-23","publish_status":"0","recid":"10058","relation_version_is_last":true,"title":["Canny-Edge-Detection/Rankine-Hugoniot-conditions unified shock sensor for inviscid and viscous flows"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-06-20T18:47:25.768985+00:00"}