{"id":314180,"date":"2023-10-31T15:52:51","date_gmt":"2023-10-31T15:52:51","guid":{"rendered":"\/forum\/forums\/topic\/icfd-how-to-obtain-drag-force-and-inertia-force-due-to-wave-impacting-piles\/"},"modified":"2023-10-31T15:52:51","modified_gmt":"2023-10-31T15:52:51","slug":"icfd-how-to-obtain-drag-force-and-inertia-force-due-to-wave-impacting-piles","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/icfd-how-to-obtain-drag-force-and-inertia-force-due-to-wave-impacting-piles\/","title":{"rendered":"ICFD how to obtain drag force and inertia force due to wave impacting piles"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I am trying to extract both the drag force and inertia force from my LS-DYNA model which uses the ICFD method. The model is pictured below and consists of waves impacting a rigid piled structure which is eventually to be made elastic (steel). I am able to use ICFD_DATABASE_DRAG which outputs &#8220;Fp&#8221; and &#8220;Fv&#8221;, which to the best of my knowledge are the pressure drag force and viscous drag force respectively.&nbsp;<\/p>\n<p>I believe that Fp may be the drag force as it closely matches my hand calculations using the Morrison equation, however I am unsure of how to obtain the inertia force or the total drag force for the matter. Any insight on this topic would be greatly appreciated. Thank you.<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/31-10-2023-1698767511-mceclip0.png\"><\/p>\n","protected":false},"template":"","class_list":["post-314180","topic","type-topic","status-closed","hentry","topic-tag-icfd-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["283418","88"],"_bbp_author_ip":["168.143.243.24"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["517"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["314180"],"_bbp_forum_id":["27814"],"_bbp_engagement":["88","283418"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["314726"],"_bbp_last_active_id":["314726"],"_bbp_last_active_time":["2023-11-03 11:28:19"]},"test":"caleb-wooddal-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/314180","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\/314180\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=314180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}