{"id":362461,"date":"2024-04-16T11:54:53","date_gmt":"2024-04-16T11:54:53","guid":{"rendered":"\/forum\/forums\/topic\/no-ignition-in-premixed-combustion\/"},"modified":"2024-04-17T12:59:40","modified_gmt":"2024-04-17T12:59:40","slug":"no-ignition-in-premixed-combustion","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/no-ignition-in-premixed-combustion\/","title":{"rendered":"No ignition in premixed combustion"},"content":{"rendered":"<p>Hi everyone!<\/p>\n<p>I&#8217;m currently trying to simulate a premixed NH3-flame (steady-state).<\/p>\n<p>I&#8217;ve imported the GRI 3.0 mechanism. I&#8217;ve selected Species Transport, volumetric reactions, Eddy-Dissipation concept and applied a velocity inlet (1 inlet) where I&#8217;ve specified mole fractions of NH3 and O2 which is at 300 K. Additionally, I&#8217;ve initialized the domain with a temperature of 2500 K in order to ignite the mixture. The temperature contours however show 300 K in the entire domain after simulating, and the NH3 doesn&#8217;t react.<\/p>\n<p>Before running this simulation, I&#8217;ve used the same settings for methane-air mixture (even without initializing T=2500 K) and this does react.<\/p>\n<p>Do you have any tips on how to solve this problem?<\/p>\n<p>Thank you in advance!<\/p>\n","protected":false},"template":"","class_list":["post-362461","topic","type-topic","status-closed","hentry","topic-tag-cfd-combustion","topic-tag-premixed-combustion"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi everyone!I&#039;m currently trying to simulate a premixed NH3-flame (steady-state).I&#039;ve imported the GRI 3.0 mechanism. I&#039;ve selected Species Transport, volumetric reactions, Eddy-Dissipation concept and applied a velocity inlet (1 inlet) where I&#039;ve specified mole fractions of NH3 and O2 which is at 300 K. 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