{"id":45144,"date":"2020-06-15T18:17:39","date_gmt":"2020-06-15T18:17:39","guid":{"rendered":"\/forum\/forums\/topic\/buoyancy-force-not-considered-during-free-fall\/"},"modified":"2020-06-15T18:17:39","modified_gmt":"2020-06-15T18:17:39","slug":"buoyancy-force-not-considered-during-free-fall","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/buoyancy-force-not-considered-during-free-fall\/","title":{"rendered":"buoyancy force not considered during free fall"},"content":{"rendered":"<p>Hi,<\/p>\n<p><\/p>\n<p>I am testing a free fall study of an object in Ansys Fluent 2019 R3 and i observed that fluent is not considering the buoyancy force for drag force estimation. I also found a thread in CFD post talking about this and they say the work around is subtracting the buoyancy force from the estimated drag force. Here is the link for the thread.&nbsp;<a href=\"https:\/\/www.cfd-online.com\/Forums\/fluent\/105250-buoyancy-6dof-solver-fluent.html\">https:\/\/www.cfd-online.com\/Forums\/fluent\/105250-buoyancy-6dof-solver-fluent.html<\/a>.<\/p>\n<p><\/p>\n<p>Can you guys please confirm if it true that fluent does not consider buoyancy forces during free fall.<\/p>\n<p><\/p>\n<p>Note that i also changed the operating density to density of fluid.<\/p>\n<p><\/p>\n<p>Thank you<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-45144","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["17325"],"_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":["1589"],"_bbp_subscription":["249739"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["45144"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","199","22555","175577"],"_bbp_voice_count":["4"],"_bbp_reply_count":["15"],"_bbp_last_reply_id":["122363"],"_bbp_last_active_id":["122363"],"_bbp_last_active_time":["2020-07-24 14:00:01"]},"test":"vishwatejakasoju"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/45144","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\/45144\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=45144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}