{"id":366769,"date":"2024-05-14T12:30:10","date_gmt":"2024-05-14T12:30:10","guid":{"rendered":"\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/"},"modified":"2024-05-14T12:30:10","modified_gmt":"2024-05-14T12:30:10","slug":"ignition-doesnt-start-with-gri-mech-for-methane","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/","title":{"rendered":"Ignition doesn&#8217;t start with GRI-Mech for methane"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I already checked others forum but it couldn&#8217;t fix my problem, so I would like to know if someone can help me please.<\/p>\n<p>I have an ignition issue with my combustion simulation.<\/p>\n<p>My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#8217;t start&#8230; When I do the same simulation with methane-air mixture (in species transport model), it works.<\/p>\n<p>Do you know how I can solve this issue please ?&nbsp;<\/p>\n<p>Here are my parameters :<\/p>\n<p>Steady combustion, with energy model, k-e viscous model and Species Transport model (using GRI 3.0 + Eddy Dissipation Concept)<br \/>Air inlet velocity (I tried 2,4 and 6,1, but it doesn&#8217;t works&#8230;), 300K<br \/>Fuel inlet velocity 5 m\/s, 300K, 100% methane<br \/>Outlet pressure of 101kPa<br \/>Coupled Pressure scheme, and 2nd order for spacial discretisazions.<br \/>I&#8217;m trying to reproduce a simulation I found on a paper, to learn and improve in combustion simulations. Hence, normally these parameters are correct (according to the paper, which succeed to do simulations with these parameters&#8230;).<\/p>\n<p>So I don&#8217;t get why my mixture doesn&#8217;t ignite, can you help me please ?<\/p>\n<p>PS : The mesh is normally correct and is more precise than the mesh of the paper.<\/p>\n<p>Thanks.<\/p>\n","protected":false},"template":"","class_list":["post-366769","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,I already checked others forum but it couldn&#039;t fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#039;t start... When I do the same simulation with methane-air\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,I already checked others forum but it couldn&#039;t fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#039;t start... When I do the same simulation with methane-air\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-05-14T12:30:10+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-05-14T12:30:10+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello,I already checked others forum but it couldn&#039;t fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#039;t start... When I do the same simulation with methane-air\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/#listItem\",\"name\":\"Ignition doesn&#8217;t start with GRI-Mech for methane\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/#listItem\",\"position\":3,\"name\":\"Ignition doesn&#8217;t start with GRI-Mech for methane\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/\",\"name\":\"Ignition doesn\\u2019t start with GRI-Mech for methane | Ansys Learning Forum\",\"description\":\"Hello,I already checked others forum but it couldn't fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... When I do the same simulation with methane-air\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/ignition-doesnt-start-with-gri-mech-for-methane\\\/#breadcrumblist\"},\"datePublished\":\"2024-05-14T12:30:10+00:00\",\"dateModified\":\"2024-05-14T12:30:10+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum","description":"Hello,I already checked others forum but it couldn't fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... When I do the same simulation with methane-air","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/#listItem","name":"Ignition doesn&#8217;t start with GRI-Mech for methane"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/#listItem","position":3,"name":"Ignition doesn&#8217;t start with GRI-Mech for methane","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/","name":"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum","description":"Hello,I already checked others forum but it couldn't fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... When I do the same simulation with methane-air","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/#breadcrumblist"},"datePublished":"2024-05-14T12:30:10+00:00","dateModified":"2024-05-14T12:30:10+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum","og:description":"Hello,I already checked others forum but it couldn't fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... When I do the same simulation with methane-air","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/","article:published_time":"2024-05-14T12:30:10+00:00","article:modified_time":"2024-05-14T12:30:10+00:00","twitter:card":"summary_large_image","twitter:title":"Ignition doesn\u2019t start with GRI-Mech for methane | Ansys Learning Forum","twitter:description":"Hello,I already checked others forum but it couldn't fix my problem, so I would like to know if someone can help me please.I have an ignition issue with my combustion simulation.My simulation uses the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... When I do the same simulation with methane-air"},"aioseo_meta_data":{"post_id":"366769","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"content","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2024-10-28 16:42:26","updated":"2024-10-28 16:42:26","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tIgnition doesn\u2019t start with GRI-Mech for methane\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"Ignition doesn&#8217;t start with GRI-Mech for methane","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ignition-doesnt-start-with-gri-mech-for-methane\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["110805","101181"],"_bbp_author_ip":["184.24.96.207"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1089"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["366769"],"_bbp_forum_id":["27792"],"_bbp_engagement":["101181","110805"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["395009"],"_bbp_last_active_id":["395009"],"_bbp_last_active_time":["2024-11-22 17:21:28"]},"test":"felix512hotmail-fr"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/366769","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/366769\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=366769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}