{"id":398703,"date":"2024-12-29T13:44:48","date_gmt":"2024-12-29T13:44:48","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reference-enthalpy-values-in-material-properties-database-ansys-fluent\/"},"modified":"2024-12-29T13:44:48","modified_gmt":"2024-12-29T13:44:48","slug":"reference-enthalpy-values-in-material-properties-database-ansys-fluent","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reference-enthalpy-values-in-material-properties-database-ansys-fluent\/","title":{"rendered":"Reference Enthalpy Values in Material Properties database Ansys Fluent"},"content":{"rendered":"<p>&lt;p class=&#8221;MsoNormal&#8221;&gt;Hi Fluent Experts.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;I am simulating water flow boiling through microchannel using Multiphase VOF model on Ansys Fluent&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;I have a question&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Why Ansys Fluent in Material properties takes reference Enthalpy of liquid- water is -2.858e+08 J\/kgmol with molecular weight of 18.0152 kg\/kmol at reference temperature of 298 K&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Similarly Ansys takes enthalpy of vapor-water -2.418e+08 J\/kgmol with molecular weight of 18.01534 kg\/kmol as at reference temperature of 298.15 K&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;I have calculated and understand the latent heat of vaporization i.e. the difference of both enthalpies (h<em>&lt;sub&gt;fg&lt;\/sub&gt;<\/em>) is same as that the difference in enthalpies values for liquid-water and vapor taken from steam table at 298.15 K&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;But still why fluent is using these huge reference values with -ve signs.&lt;\/p&gt;&lt;p class=&#8221;MsoNormal&#8221;&gt;Thanks&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-398703","topic","type-topic","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=\"Hi Fluent Experts.I am simulating water flow boiling through microchannel using Multiphase VOF model on Ansys FluentI have a questionWhy Ansys Fluent in Material properties takes reference Enthalpy of liquid- water is -2.858e+08 J\/kgmol with molecular weight of 18.0152 kg\/kmol at reference temperature of 298 KSimilarly Ansys takes enthalpy of\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/reference-enthalpy-values-in-material-properties-database-ansys-fluent\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" 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