{"id":457654,"date":"2026-05-06T08:50:22","date_gmt":"2026-05-06T08:50:22","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/icfd_boundary_windkessel-purely-resistive-outlet-boundary-condition\/"},"modified":"2026-05-06T08:50:22","modified_gmt":"2026-05-06T08:50:22","slug":"icfd_boundary_windkessel-purely-resistive-outlet-boundary-condition","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/icfd_boundary_windkessel-purely-resistive-outlet-boundary-condition\/","title":{"rendered":"*ICFD_BOUNDARY_WINDKESSEL purely resistive outlet boundary condition"},"content":{"rendered":"<p>&lt;p class=&#8221;isSelectedEnd&#8221;&gt;Hello everyone,&lt;\/p&gt;&lt;p class=&#8221;isSelectedEnd&#8221;&gt;I am using LS-DYNA ICFD for hemodynamic simulations.&lt;\/p&gt;&lt;p class=&#8221;isSelectedEnd&#8221;&gt;I would like to implement a purely resistive outlet boundary condition (i.e., only R2, with R1 = C1 = L1 = 0). However, the solver diverges when I set C1 = 0 (division by 0 not allowed)&lt;\/p&gt;&lt;p class=&#8221;isSelectedEnd&#8221;&gt;Is there a way to define a purely resistive model at the outlets using the available WTYPE circuit options in the card?&lt;\/p&gt;&lt;p class=&#8221;isSelectedEnd&#8221;&gt;If not, could you clarify how WTYPE = 6 works, particularly regarding the use of the &#8220;icfd_usercircuit&#8221; in the file <em>dyn21icfd.f<\/em>?&lt;\/p&gt;&lt;p class=&#8221;isSelectedEnd&#8221;&gt;Thank you in advance for your help.&lt;\/p&gt;&lt;p&gt;Best regards,&lt;br&gt;Gred&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-457654","topic","type-topic","status-publish","hentry","topic-tag-blood-flow","topic-tag-icfd-1","topic-tag-lsdyna","topic-tag-Windkesselmodel-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["457654"],"_bbp_subscription":["614160","58821"],"_bbp_author_ip":["2001:861:52c6:b720:b9dc:7ebe:5711:aa7c"],"_bbp_last_reply_id":["457703"],"_bbp_last_active_id":["457703"],"_bbp_last_active_time":["2026-05-06 14:25:26"],"_bbp_reply_count":["2"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["614160","58821"],"_btv_view_count":["101"],"_bbp_topic_status":["unanswered"],"_bbp_notification_enabled":["199"]},"test":"guillaume-renedobaltgroup-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/457654","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\/457654\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=457654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}