{"id":394422,"date":"2024-11-20T02:38:38","date_gmt":"2024-11-20T02:38:38","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mesh-independence-study-for-non-premixed-oxy-coal-combustion\/"},"modified":"2024-11-20T02:38:38","modified_gmt":"2024-11-20T02:38:38","slug":"mesh-independence-study-for-non-premixed-oxy-coal-combustion","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mesh-independence-study-for-non-premixed-oxy-coal-combustion\/","title":{"rendered":"mesh independence study for non-premixed oxy-coal combustion"},"content":{"rendered":"<p>&lt;p&gt;I am running a 2-d RANS case for non-premixed oxy-coal combustion in an elevated pressure environment.&lt;\/p&gt;&lt;p&gt;the models used: kw-sst for turbulence, species transport with finite rate\/eddy dissipation model for combustion, DPM model for particle, DO model for radiation.&lt;\/p&gt;&lt;p&gt;3 meshes are generated in ICEM; quality check is good.&lt;\/p&gt;&lt;p&gt;the temperature, TKE, volatile concentration are quite close for these mesh. but heat of reaction profile shows big differences between coarse and medium\/fine mesh.&lt;\/p&gt;&lt;p&gt;is this caused by finite rate\/eddy dissipation model, because this model use a piece-wise function to get the reaction rate?&lt;\/p&gt;&lt;p&gt;Thank you.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/11\/20-11-2024-1732069755-mceclip0.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-394422","topic","type-topic","status-publish","hentry","topic-tag-2021-r1-1","topic-tag-2d_dpm-1","topic-tag-2d-axisymmetric","topic-tag-coal-combustion","topic-tag-DiscreteOrdinateModel-1","topic-tag-eddy-dissipation-model","topic-tag-k-omega-sst","topic-tag-mesh-independence-study","topic-tag-non-premixed-combustion","topic-tag-reynoldsaveragenavierstokes-1","topic-tag-species-transport"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["27819","199"],"_bbp_author_ip":["24.3.104.227"],"_btv_view_count":["321"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["394422"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","27819"],"_bbp_voice_count":["2"],"_bbp_reply_count":["21"],"_bbp_last_reply_id":["395412"],"_bbp_last_active_id":["395412"],"_bbp_last_active_time":["2024-11-26 16:53:15"]},"test":"ll00023mix-wvu-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/394422","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\/394422\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=394422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}