{"id":390351,"date":"2024-10-18T05:42:25","date_gmt":"2024-10-18T05:42:25","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cesechemistry-error-on-simulation-of-aluminun-combustion\/"},"modified":"2024-10-18T05:42:25","modified_gmt":"2024-10-18T05:42:25","slug":"cesechemistry-error-on-simulation-of-aluminun-combustion","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cesechemistry-error-on-simulation-of-aluminun-combustion\/","title":{"rendered":"CESE+Chemistry. error on simulation of aluminun combustion"},"content":{"rendered":"<p>&lt;p&gt;<strong>background<\/strong>&lt;\/p&gt;&lt;p&gt;I built a two-dimensional combustion model of aluminum, using a rectangle with a length of 0.5m and a width of 0.04, and a mesh size of 0.004&lt;\/p&gt;&lt;p&gt;<strong>KEYWORD<\/strong>&lt;\/p&gt;&lt;div&gt;*KEYWORD&lt;\/div&gt;&lt;div&gt;*CONTROL_TERMINATION&lt;\/div&gt;&lt;div&gt;$#&nbsp; endtim&nbsp; &nbsp; endcyc&nbsp; &nbsp; &nbsp;dtmin&nbsp; &nbsp; endeng&nbsp; &nbsp; endmas&nbsp; &nbsp; &nbsp;nosol&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp;0.001&nbsp; &nbsp; 900000&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.01.000000E8&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&lt;\/div&gt;&lt;div&gt;*DATABASE_BINARY_D3DUMP&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; dt&nbsp; &nbsp; &nbsp; lcdt&nbsp; &nbsp; &nbsp; beam&nbsp; &nbsp; &nbsp;npltc&nbsp; &nbsp; psetid&nbsp; &nbsp; &nbsp; &nbsp;cid&nbsp; &nbsp; &nbsp;nskip&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp;10000.0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&lt;\/div&gt;&lt;div&gt;*DATABASE_BINARY_D3PLOT&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; dt&nbsp; &nbsp; &nbsp; lcdt&nbsp; &nbsp; &nbsp; beam&nbsp; &nbsp; &nbsp;npltc&nbsp; &nbsp; psetid&lt;\/div&gt;&lt;div&gt;1.00000E-5&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&lt;\/div&gt;&lt;div&gt;*CESE_CONTROL_SOLVER&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp;icese&nbsp; &nbsp; &nbsp;iflow&nbsp; &nbsp; &nbsp;igeom&nbsp; &nbsp; iframe&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&lt;\/div&gt;&lt;div&gt;*CESE_CONTROL_TIMESTEP&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; iddt&nbsp; &nbsp; &nbsp; &nbsp;cfl&nbsp; &nbsp; &nbsp;dtint&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; &nbsp;0.55.00000E-9&lt;\/div&gt;&lt;div&gt;*CESE_CONTROL_LIMITER&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp;idlmt&nbsp; &nbsp; &nbsp; alfa&nbsp; &nbsp; &nbsp;beta&nbsp; &nbsp; &nbsp; &nbsp;epsr&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0&nbsp; &nbsp; &nbsp; 10.0&nbsp; &nbsp; &nbsp; &nbsp;0.5&nbsp; &nbsp; &nbsp; &nbsp;0.1&lt;\/div&gt;&lt;div&gt;*CESE_INITIAL_CHEMISTRY&lt;\/div&gt;&lt;div&gt;$#&nbsp; chemid&nbsp; &nbsp; compid&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;5&nbsp; &nbsp; &nbsp; &nbsp; 12&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp;uic&nbsp; &nbsp; &nbsp; &nbsp;vic&nbsp; &nbsp; &nbsp; &nbsp;wic&nbsp; &nbsp; &nbsp;rhoic&nbsp; &nbsp; &nbsp; &nbsp;pic&nbsp; &nbsp; &nbsp; &nbsp;tic&nbsp; &nbsp; &nbsp; &nbsp;hic&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; 104000.0&nbsp; &nbsp; &nbsp;300.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&lt;\/div&gt;&lt;div&gt;*CESE_INITIAL_CHEMISTRY_SET&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp;setid&nbsp; &nbsp; chemid&nbsp; &nbsp; compid&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;5&nbsp; &nbsp; &nbsp; &nbsp; 11&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp;uic&nbsp; &nbsp; &nbsp; &nbsp;vic&nbsp; &nbsp; &nbsp; &nbsp;wic&nbsp; &nbsp; &nbsp;rhoic&nbsp; &nbsp; &nbsp; &nbsp;pic&nbsp; &nbsp; &nbsp; &nbsp;tic&nbsp; &nbsp; &nbsp; &nbsp;hic&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&nbsp; &nbsp;1000000&nbsp; &nbsp; 1000.0&nbsp; &nbsp; &nbsp; &nbsp;0.0&lt;\/div&gt;&lt;div&gt;*CESE_PART&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp;pid&nbsp; &nbsp; &nbsp; &nbsp;mid&nbsp; &nbsp; &nbsp;eosid&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&lt;\/div&gt;&lt;div&gt;*CESE_EOS_IDEAL_GAS&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp;eosid&nbsp; &nbsp; &nbsp; &nbsp; cv&nbsp; &nbsp; &nbsp; &nbsp; cp&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp; 10.0&nbsp; &nbsp; &nbsp; 10.0&lt;\/div&gt;&lt;div&gt;*CESE_MAT_GAS&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; 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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;species&lt;\/div&gt;&lt;div&gt;&nbsp; 100000.0AL&lt;\/div&gt;&lt;div&gt;*CHEMISTRY_COMPOSITION&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; id&nbsp; &nbsp;modelid&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; 12&nbsp; &nbsp; &nbsp; &nbsp; 10&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp;molfr&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;species&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp;1.0O2&lt;\/div&gt;&lt;div&gt;*CHEMISTRY_MODEL&lt;\/div&gt;&lt;div&gt;$# modelid&nbsp; &nbsp; jacsel&nbsp; &nbsp; errlim&lt;\/div&gt;&lt;div&gt;&nbsp; &nbsp; &nbsp; &nbsp; 10&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;1&nbsp; &nbsp; &nbsp;0.001&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&lt;\/div&gt;&lt;div&gt;reaction.inp&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&lt;\/div&gt;&lt;div&gt;therm.dat&lt;\/div&gt;&lt;div&gt;$#&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&lt;\/div&gt;&lt;div&gt;&nbsp;&lt;\/div&gt;&lt;div&gt;*END&lt;\/div&gt;&lt;div&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/18-10-2024-1729229927-mceclip0.png\" \/>&lt;\/div&gt;&lt;div&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/10\/18-10-2024-1729229949-mceclip2.png\" \/>&lt;\/div&gt;&lt;p&gt;<strong>ERROR<\/strong>&lt;\/p&gt;&lt;p&gt;Nonlinear chemistry EOS temperature solver returned a negative value.&lt;br&gt;&nbsp; &nbsp; &nbsp; -0.19805E+04&lt;br&gt;*** Error 150210 (CHEM+210) (processor # 3)&lt;br&gt;&nbsp; &nbsp; &nbsp;Nonlinear chemistry EOS temperature solver returned a negative value.&lt;br&gt;&nbsp; &nbsp; &nbsp; -0.40183E+03&lt;br&gt;&nbsp;CHEM_COMBUST_T: Failed to converge&lt;br&gt;In the calculation of the burning model of co if there is this error I only need to put the net style is small to solve, this error even if I put the net style is small to 0.001, it can not be solved, want to ask how to solve this problem&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-390351","topic","type-topic","status-publish","hentry","topic-tag-CESE-1","topic-tag-chemistry","topic-tag-combustion"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"backgroundI built a two-dimensional combustion model of aluminum, using a rectangle with a length of 0.5m and a width of 0.04, and a mesh size of 0.004KEYWORD*KEYWORD*CONTROL_TERMINATION$# endtim endcyc dtmin endeng endmas nosol 0.001 900000 0.0 0.01.000000E8 0*DATABASE_BINARY_D3DUMP$# dt\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cesechemistry-error-on-simulation-of-aluminun-combustion\/\" \/>\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 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