{"id":359868,"date":"2024-04-01T17:02:34","date_gmt":"2024-04-01T17:02:34","guid":{"rendered":"\/forum\/forums\/reply\/359868\/"},"modified":"2024-04-01T17:02:34","modified_gmt":"2024-04-01T17:02:34","slug":"359868","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/359868\/","title":{"rendered":"Reply To: volume fractions exceeds 1"},"content":{"rendered":"<p>&lt;p&gt;Hi,&lt;\/p&gt;&lt;p&gt;Lets assume vof1 is the volume fraction of primary phase, and vof2, vof3 are the volume fraction of the secondary phases. The primary phase volume fraction will first be picked up based on initial conditions provided as = 1 &#8211; (vof2 + vof3). As the warning suggests, when the patching of secondary phase volume fractions end up being such that vof1 + vof2 + vof3 &gt; 1 in some cells, it shows up.&lt;\/p&gt;&lt;p&gt;The solver will anyways &#8216;normalize&#8217; the volume fractions. So, it is best to verify through contour plots, after initialization and patching, if the phasic volume fractions represent the desired condition.&lt;\/p&gt;&lt;p&gt;Lastly, I assume liquid is your primary phase. Initialize the case with gas1 and gas2 volume fractions as zero. Have a cell register for the top headspace and patch gas1 and gas2 volume fractions in this register.&lt;\/p&gt;&lt;p&gt;Regards,&lt;br&gt;Vishesh&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-359868","reply","type-reply","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,Lets assume vof1 is the volume fraction of primary phase, and vof2, vof3 are the volume fraction of the secondary phases. The primary phase volume fraction will first be picked up based on initial conditions provided as = 1 - (vof2 + vof3). As the warning suggests, when the patching of secondary phase volume fractions\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/359868\/\" \/>\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=\"Reply To: volume fractions exceeds 1 | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi,Lets assume vof1 is the volume fraction of primary phase, and vof2, vof3 are the volume fraction of the secondary phases. The primary phase volume fraction will first be picked up based on initial conditions provided as = 1 - (vof2 + vof3). 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The primary phase volume fraction will first be picked up based on initial conditions provided as = 1 - (vof2 + vof3). 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The primary phase volume fraction will first be picked up based on initial conditions provided as = 1 - (vof2 + vof3). 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