{"id":398537,"date":"2024-12-26T17:42:54","date_gmt":"2024-12-26T17:42:54","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artificial-high-velocities-at-the-interface-using-vof\/"},"modified":"2024-12-26T17:42:54","modified_gmt":"2024-12-26T17:42:54","slug":"artificial-high-velocities-at-the-interface-using-vof","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artificial-high-velocities-at-the-interface-using-vof\/","title":{"rendered":"Artificial high velocities at the interface, using VOF"},"content":{"rendered":"<p>&lt;p&gt;I am modeling a stratified air and water flow inside a pipe using VOF with adaptive meshing in Fluent. The air velocity is about 40 times higher than the water velocity.&lt;br&gt;In the initial moments, velocities much higher than the air velocity appear at the air\/water interface, leading to the formation of artificial waves near the domain inlet. These waves dissipate over time, and the results become consistent, but it consumes unnecessary processing time.&lt;br&gt;What could be the possible causes of this phenomenon and how can it be avoided?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-398537","topic","type-topic","status-publish","hentry","topic-tag-fluent","topic-tag-vof"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I am modeling a stratified air and water flow inside a pipe using VOF with adaptive meshing in Fluent. The air velocity is about 40 times higher than the water velocity.In the initial moments, velocities much higher than the air velocity appear at the air\/water interface, leading to the formation of artificial waves near the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artificial-high-velocities-at-the-interface-using-vof\/\" \/>\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=\"Artificial high velocities at the interface, using VOF | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I am modeling a stratified air and water flow inside a pipe using VOF with adaptive meshing in Fluent. The air velocity is about 40 times higher than the water velocity.In the initial moments, velocities much higher than the air velocity appear at the air\/water interface, leading to the formation of artificial waves near the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/artificial-high-velocities-at-the-interface-using-vof\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-12-26T17:42:54+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-12-26T17:42:54+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Artificial high velocities at the interface, using VOF | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I am modeling a stratified air and water flow inside a pipe using VOF with adaptive meshing in Fluent. The air velocity is about 40 times higher than the water velocity.In the initial moments, velocities much higher than the air velocity appear at the air\/water interface, leading to the formation of artificial waves near the\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/artificial-high-velocities-at-the-interface-using-vof\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/artificial-high-velocities-at-the-interface-using-vof\\\/#listItem\",\"name\":\"Artificial high velocities at the interface, using VOF\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/artificial-high-velocities-at-the-interface-using-vof\\\/#listItem\",\"position\":4,\"name\":\"Artificial high velocities at the interface, using VOF\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/artificial-high-velocities-at-the-interface-using-vof\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/artificial-high-velocities-at-the-interface-using-vof\\\/\",\"name\":\"Artificial high velocities at the interface, using VOF | Ansys Learning Forum\",\"description\":\"I am modeling a stratified air and water flow inside a pipe using VOF with adaptive meshing in Fluent. 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