{"id":365410,"date":"2024-05-03T12:45:08","date_gmt":"2024-05-03T12:45:08","guid":{"rendered":"\/forum\/forums\/reply\/365410\/"},"modified":"2024-05-03T12:45:08","modified_gmt":"2024-05-03T12:45:08","slug":"365410","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/365410\/","title":{"rendered":"Reply To: No ignition in premixed combustion"},"content":{"rendered":"<p>&lt;p&gt;Hello all,&lt;\/p&gt;&lt;p&gt;I have a similar problem with the ignition in my simulation.&lt;\/p&gt;&lt;p&gt;I&#8217;m using the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#8217;t start&#8230; And as Sem, when I do the same simulation with methane-air mixture, it works.&lt;\/p&gt;&lt;p&gt;Do you know how I can solve this issue please ?&nbsp;&lt;\/p&gt;&lt;p&gt;Here are my parameters :&lt;\/p&gt;<\/p>\n<ul>\n<li>Steady combustion, with energy model, k-e viscous model and Species Transport model (using GRI 3.0 + Eddy Dissipation Concept)<\/li>\n<li>Air inlet velocity (I tried 2,4 and 6,1, but it doesn&#8217;t works&#8230;), 300K<\/li>\n<li>Fuel inlet velocity 5 m\/s, 300K, 100% methane<\/li>\n<li>Outlet pressure of 101kPa<\/li>\n<li>Coupled Pressure scheme, and 2nd order for spacial discretisazions<\/li>\n<\/ul>\n<p>&lt;p&gt;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;).&lt;\/p&gt;&lt;p&gt;So I don&#8217;t get why my mixture doesn&#8217;t ignite, can you help me please ?&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Thanks.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-365410","reply","type-reply","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 all,I have a similar problem with the ignition in my simulation.I&#039;m using the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#039;t start... And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? Here are my parameters :Steady\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/365410\/\" \/>\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=\"Reply To: No ignition in premixed combustion | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello all,I have a similar problem with the ignition in my simulation.I&#039;m using the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn&#039;t start... And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? 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And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? 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And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? 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And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? Here are my parameters :Steady","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/365410\/","article:published_time":"2024-05-03T12:45:08+00:00","article:modified_time":"2024-05-03T12:45:08+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: No ignition in premixed combustion | Ansys Learning Forum","twitter:description":"Hello all,I have a similar problem with the ignition in my simulation.I'm using the GRI 3.0 mechanism, for non premixed air-methane combustion, but the ignition doesn't start... And as Sem, when I do the same simulation with methane-air mixture, it works.Do you know how I can solve this issue please ? 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