{"id":380957,"date":"2024-08-28T22:25:21","date_gmt":"2024-08-28T22:25:21","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/"},"modified":"2024-08-28T22:25:21","modified_gmt":"2024-08-28T22:25:21","slug":"cese-solver-ignition-mechanism","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/","title":{"rendered":"CESE solver &#8211; Ignition mechanism"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water.&nbsp;&lt;\/p&gt;&lt;p&gt;It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see combustion happening at gas -air interface. I was wondering why presence of H2O has strong influence on ignition. Is it related to turbulence model or CESE solver? or chemkin mechanism? Can you share the equations related to ignition mechanism in CESE solver.&nbsp; &nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-380957","topic","type-topic","status-publish","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 am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/\" \/>\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=\"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-08-28T22:25:21+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-08-28T22:25:21+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see\" \/>\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\\\/cese-solver-ignition-mechanism\\\/#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\\\/cese-solver-ignition-mechanism\\\/#listItem\",\"name\":\"CESE solver &#8211; Ignition mechanism\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/cese-solver-ignition-mechanism\\\/#listItem\",\"position\":3,\"name\":\"CESE solver &#8211; Ignition mechanism\",\"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\\\/cese-solver-ignition-mechanism\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/cese-solver-ignition-mechanism\\\/\",\"name\":\"CESE solver \\u2013 Ignition mechanism | Ansys Learning Forum\",\"description\":\"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/cese-solver-ignition-mechanism\\\/#breadcrumblist\"},\"datePublished\":\"2024-08-28T22:25:21+00:00\",\"dateModified\":\"2024-08-28T22:25:21+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":"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum","description":"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/#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\/cese-solver-ignition-mechanism\/#listItem","name":"CESE solver &#8211; Ignition mechanism"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/#listItem","position":3,"name":"CESE solver &#8211; Ignition mechanism","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\/cese-solver-ignition-mechanism\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/","name":"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum","description":"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/#breadcrumblist"},"datePublished":"2024-08-28T22:25:21+00:00","dateModified":"2024-08-28T22:25:21+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":"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum","og:description":"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/","article:published_time":"2024-08-28T22:25:21+00:00","article:modified_time":"2024-08-28T22:25:21+00:00","twitter:card":"summary_large_image","twitter:title":"CESE solver \u2013 Ignition mechanism | Ansys Learning Forum","twitter:description":"Hello,I am using CESE solver to simulate adiabatic expansion of compressed H2 gas (700bar) into surrounding air using chemkin mechanism. H2 should react with O2 to form water. It is found that there was no ignition at h2-air interface. but when I patch few elements surrounding compressed H2 gas with product H2O, then I can see"},"aioseo_meta_data":{"post_id":"380957","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 16:30:57","updated":"2024-10-28 16:30:57","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\tCESE solver \u2013 Ignition mechanism\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":"CESE solver &#8211; Ignition mechanism","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cese-solver-ignition-mechanism\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["40892","13694"],"_bbp_author_ip":["2a02:c7c:62c1:3f00:a41c:9b1c:de16:a5bd"],"_btv_view_count":["451"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["380957"],"_bbp_forum_id":["27814"],"_bbp_engagement":["13694","40892"],"_bbp_voice_count":["2"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["392089"],"_bbp_last_active_id":["392089"],"_bbp_last_active_time":["2024-10-30 17:21:39"]},"test":"gawale-aulster-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/380957","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\/380957\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=380957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}