{"id":404462,"date":"2025-01-10T16:03:50","date_gmt":"2025-01-10T16:03:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mixture-fraction-of-coal-oxy-combustion-fuel-coal-co2-oxidizer-o2co2\/"},"modified":"2025-01-10T16:03:50","modified_gmt":"2025-01-10T16:03:50","slug":"mixture-fraction-of-coal-oxy-combustion-fuel-coal-co2-oxidizer-o2co2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mixture-fraction-of-coal-oxy-combustion-fuel-coal-co2-oxidizer-o2co2\/","title":{"rendered":"mixture fraction of coal oxy-combustion (fuel: coal +CO2; oxidizer O2+CO2)"},"content":{"rendered":"<p>&lt;p&gt;co-axial flow arrangement: Coal + CO2 and aO2+bCO2&lt;br&gt;DPM, species transport, 2-step reaction mechanism&lt;\/p&gt;&lt;p&gt;in the postprocessing, I used the local equivalent ratio to indicate the flame location, which&nbsp; coincides with the flame.&lt;\/p&gt;&lt;p&gt;the issue is that it doesn&#8217;t consider the diluted gas&#8217;s impact: CO2 could be involved in the reaction.&lt;\/p&gt;&lt;p&gt;I used bilger definition, as shown below. the issue here is I don&#8217;t know the volatile:CO2 ratio at the location I interested.&lt;\/p&gt;&lt;p&gt;Non-premixed model seems be able to do this job. but I use species transport model, not providing this option.&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/01\/10-01-2025-1736524433-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-404462","topic","type-topic","status-publish","hentry","topic-tag-2d_dpm-1","topic-tag-coal-particle-combustion-1","topic-tag-non-premixed-combustion","topic-tag-species-transport-model"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"co-axial flow arrangement: Coal + CO2 and aO2+bCO2DPM, species transport, 2-step reaction mechanismin the postprocessing, I used the local equivalent ratio to indicate the flame location, which coincides with the flame.the issue is that it doesn&#039;t consider the diluted gas&#039;s impact: CO2 could be involved in the reaction.I used bilger definition, as shown below. the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mixture-fraction-of-coal-oxy-combustion-fuel-coal-co2-oxidizer-o2co2\/\" \/>\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=\"mixture fraction of coal oxy-combustion (fuel: coal +CO2; 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