{"id":44898,"date":"2020-06-09T06:38:32","date_gmt":"2020-06-09T06:38:32","guid":{"rendered":"\/forum\/forums\/topic\/core-annular-flow-caf-vof-model\/"},"modified":"2020-06-09T06:38:32","modified_gmt":"2020-06-09T06:38:32","slug":"core-annular-flow-caf-vof-model","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/core-annular-flow-caf-vof-model\/","title":{"rendered":"Core Annular Flow (CAF) VOF model"},"content":{"rendered":"<p><span style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\">I&#8217;m working on CFDs from Core Annular Flow. Oil is designed to flow in the core and water will be annular. I use the VOF model and the k-e turbulent, then I set oil as primary phase, water as secondary. The oil inlet is in the small pipe section and the water inlet is in the big pipe.<\/span><br style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\"><br style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\"><span style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\">The problem is why the flow fails, the fluid flow is dominated by oil along the pipe and water is only found at the inlet and outlet ends?<\/span><br style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\"><br style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\"><span style=\"color: #000000; font-family: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #f7f7f7;\">The attached images are Pipe Meshing, Oil Vol. Fraction, and Water Vol. Fraction<img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/c7049ec6-775b-4d02-9c5b-abd4005cef3a\/b24daf5e-153f-4791-9bb6-abd5006d68fa_collage.jpg?width=690&amp;upscale=false\" alt=\"Meshing, Oil Vol. Fraction, Water Vol. Fraction\"><\/span><\/p>\n","protected":false},"template":"","class_list":["post-44898","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["17079"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["773"],"_bbp_subscription":["252381"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["44898"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","178251"],"_bbp_voice_count":["2"],"_bbp_reply_count":["9"],"_bbp_last_reply_id":["117265"],"_bbp_last_active_id":["117265"],"_bbp_last_active_time":["2020-06-10 09:13:43"]},"test":"zakizam"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/44898","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\/44898\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=44898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}