{"id":7,"date":"2021-08-21T13:37:16","date_gmt":"2021-08-21T04:37:16","guid":{"rendered":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/?page_id=7"},"modified":"2021-10-25T14:37:29","modified_gmt":"2021-10-25T05:37:29","slug":"joint-research","status":"publish","type":"page","link":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/joint-research\/","title":{"rendered":"joint-research"},"content":{"rendered":"<h2>Joint Research<span>(Research Outline)<\/span><\/h2>\r\n<div class=\"theme-box\">\r\n<div class=\"label\">Theme<\/div>\r\n<p class=\"period\">Research period: October 2017 &#8211; Present<\/p>\r\n<p class=\"title\">\u30ab\u30fc\u30dc\u30f3\u30d5\u30ea\u30fc\u30a2\u30f3\u30e2\u30cb\u30a2\u6df7\u713c\u5674\u6d41\u62e1\u6563\u706b\u708e\u306e\u5b89\u5b9a\u6027<\/p>\r\n<p>Stability of jet diffusion flames cofiring with carbon-free ammonia<\/p>\r\n<p class=\"bold\">Collaborating Institutions<\/p>\r\n<ul>\r\n<li>Institute of Fluid Science, Tohoku University<\/li>\r\n<li>Universities of Lyon<\/li>\r\n<\/ul>\r\n<\/div>\r\n<p class=\"title\">Combustion of Ammonia<\/p>\r\n<p>Considering global warming, the importance of research on the combustion of carbon-free fuels such as ammonia is evident. However, because ammonia has a low combustion velocity compared to hydrocarbon fuels, flame stability is a problem. The use of swirl flow is an effective means to remedy this issue, and co-firing with more reactive fuels is thought to be another possible solution. Therefore, co-firing hydrogen in order to achieve complete carbon free operations and co-firing ammonia with hydrocarbons to achieve gradual carbon reduction are solutions that are currently being considered. <br \/>This international, collaborative research is aimed at bringing to light the factors controlling the stabilization of ammonia and\/or methane flames. In this study, the effect of adding ammonia to methane flames was investigated by targeting non-premixed jet diffusion flames. Through controlled experiments, the expansion of the flame stability region, including lift-off and the reattachment limit, was made apparent. In order to further clarify the mechanism that brings about these transitions, a localized study of the attached flame leading up to lift-off was conducted.<\/p>\r\n<div class=\"photo\">\r\n<div class=\"clearfix\">\r\n<ul class=\"multi\">\r\n<li>\r\n<figure><img decoding=\"async\" src=\"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-content\/themes\/c2c\/images\/sample01.jpg\" \/>\r\n<figcaption>\u56f3\uff11 \u975e\u4e88\u6df7\u5408\u5674\u6d41\u706b\u708e\u5b9f\u9a13\u88c5\u7f6e<span>Figure 1. Non-premixed jet flame setup<\/span><\/figcaption>\r\n<\/figure>\r\n<\/li>\r\n<li>\r\n<figure><img decoding=\"async\" src=\"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-content\/themes\/c2c\/images\/sample02.jpg\" \/>\r\n<figcaption>\u56f3\uff12 \u30a2\u30f3\u30e2\u30cb\u30a2\uff0f\u30e1\u30bf\u30f3\u975e\u4e88\u6df7\u5408\u5674\u6d41\u706b\u708e (a) \u4ed8\u7740\u706b\u708e\uff0c(b) \u30ea\u30d5\u30c8\u706b\u708e<span>Figure 2. Ammonia\/methane non-premixed jet flame (a) attached flame; (b) lifted flame<\/span><\/figcaption>\r\n<\/figure>\r\n<\/li>\r\n<\/ul>\r\n<\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"Joint Research(Research Outline) Theme Research period: October 2017 &#8211; Present \u30ab\u30fc\u30dc\u30f3\u30d5\u30ea\u30fc\u30a2\u30f3\u30e2\u30cb\u30a2\u6df7\u713c\u5674\u6d41\u62e1\u6563\u706b\u708e\u306e\u5b89\u5b9a\u6027 Stability of jet diffusion flames cofiring with carbon-free ammonia Collaborating Institutions Institute of Fluid Science, Tohoku University Universities of Lyon Combustion of Ammonia Considering global warming, the importance of research on the combustion of carbon-free fuels such as ammonia is evident. However, because ammonia has a low combustion velocity compared to hydrocarbon fuels, flame stability is a problem. The use of swirl flow is an effective means to remedy [&hellip;]","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/pages\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":5,"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/pages\/7\/revisions"}],"predecessor-version":[{"id":69,"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/pages\/7\/revisions\/69"}],"wp:attachment":[{"href":"https:\/\/www.ifs.tohoku.ac.jp\/c2c\/eng\/wp-json\/wp\/v2\/media?parent=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}