{"id":89,"date":"2016-09-14T14:39:07","date_gmt":"2016-09-14T13:39:07","guid":{"rendered":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/?page_id=89"},"modified":"2016-11-19T11:04:17","modified_gmt":"2016-11-19T11:04:17","slug":"mfiv","status":"publish","type":"page","link":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/research\/mfiv\/","title":{"rendered":"MFIV @ FlexNARA"},"content":{"rendered":"<p>In the offshore oil &amp; gas industry, transportation of hydrocarbons in very long flowlines or risers involves some technical challenges due to the fluid-structure interaction effects of internal travelling multiphase flow-induced vibrations, for instance, the two-phase (<em>liquid-gas<\/em>) flows. <strong>FlexNARA<\/strong> has performed a critical review on features of two-phase flows and potential models for predicting the flowing pipe dynamical behaviours through fundamental knowledge of flow pattern transition maps which depend on several fluid-structure parameters including phase velocity, pipe diameter and inclination etc.<\/p>\n<div id=\"attachment_175\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/09\/Slug.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-175\" class=\"wp-image-175 size-medium\" src=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/09\/Slug-300x203.jpg\" alt=\"Slug\" width=\"300\" height=\"203\" srcset=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/09\/Slug-300x203.jpg 300w, https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/09\/Slug-443x300.jpg 443w, https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/09\/Slug.jpg 715w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-175\" class=\"wp-caption-text\">Slug liquid-gas flows in horizontal\/vertical pipes<\/p><\/div>\n<p>Slug (<em>stable, steady or unstable intermittent<\/em>) flows are of industrial and practical interest due to the potential greatest impact on fatigue life of the containing flowlines, risers and subsea jumpers, in combination with external flow VIV effects. Mechanisms of combined <strong>MFIV-VIV<\/strong> are relatively unknown and <strong>FlexNARA<\/strong> has been working to understand and unlock their intrinsic dynamic phenomena.<\/p>\n<div id=\"attachment_309\" style=\"width: 496px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/11\/Jumper.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-309\" class=\"wp-image-309 size-full\" src=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/11\/Jumper.png\" alt=\"jumper\" width=\"486\" height=\"439\" srcset=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/11\/Jumper.png 486w, https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/11\/Jumper-300x271.png 300w, https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/files\/2016\/11\/Jumper-332x300.png 332w\" sizes=\"auto, (max-width: 486px) 100vw, 486px\" \/><\/a><p id=\"caption-attachment-309\" class=\"wp-caption-text\">Prediction of liquid volumetric fraction of intermittent slug flows in a riser section<\/p><\/div>\n<p><iframe loading=\"lazy\" title=\"FIV of Flexible Cylinder\" width=\"584\" height=\"329\" src=\"\/\/www.youtube.com\/embed\/FRAKGt6TEyk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the offshore oil &amp; gas industry, transportation of hydrocarbons in very long flowlines or risers involves some technical challenges due to the fluid-structure interaction effects of internal travelling multiphase flow-induced vibrations, for instance, the two-phase (liquid-gas) flows. FlexNARA has &hellip; <a href=\"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/research\/mfiv\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1154,"featured_media":0,"parent":47,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-89","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/pages\/89","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/users\/1154"}],"replies":[{"embeddable":true,"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/comments?post=89"}],"version-history":[{"count":16,"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/pages\/89\/revisions"}],"predecessor-version":[{"id":315,"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/pages\/89\/revisions\/315"}],"up":[{"embeddable":true,"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/pages\/47"}],"wp:attachment":[{"href":"https:\/\/www.staff.ncl.ac.uk\/narakorn.srinil\/wp-json\/wp\/v2\/media?parent=89"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}