{"id":459713,"date":"2026-06-14T07:28:35","date_gmt":"2026-06-14T07:28:35","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cfx-2019-r2\/"},"modified":"2026-06-14T07:28:35","modified_gmt":"2026-06-14T07:28:35","slug":"cfx-2019-r2","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cfx-2019-r2\/","title":{"rendered":"CFX 2019 R2"},"content":{"rendered":"<p>&lt;p data-start=&#8221;83&#8243; data-end=&#8221;125&#8243;&gt;I have a question about ANSYS CFX 2019 R2.&lt;\/p&gt;&lt;p data-start=&#8221;127&#8243; data-end=&#8221;320&#8243;&gt;How can I define the initial volume fraction of two components in a single fluid domain? The two phases have different densities and tend to form a clear stratification due to buoyancy effects.&lt;\/p&gt;&lt;p data-start=&#8221;322&#8243; data-end=&#8221;449&#8243;&gt;In addition, external forces act on the flow field, causing the interface between the two phases to evolve gradually over time.&lt;\/p&gt;&lt;p data-start=&#8221;451&#8243; data-end=&#8221;650&#8243;&gt;What is the correct way to set up the initial volume fraction distribution for both phases in CFX 2019 R2 to properly capture this stratified initial condition and its subsequent interface evolution?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-459713","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27792"],"_bbp_topic_id":["459713"],"_bbp_author_ip":["54.238.166.184"],"_bbp_last_reply_id":["459732"],"_bbp_last_active_id":["459732"],"_bbp_last_active_time":["2026-06-15 07:11:17"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["661595","199842"],"_bbp_likes_count":["1"],"_btv_view_count":["61"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["199842"]},"test":"1805611570qq-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/459713","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\/459713\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=459713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}