{"id":166695,"date":"2022-02-24T02:48:45","date_gmt":"2022-02-24T02:48:45","guid":{"rendered":"\/forum\/forums\/topic\/non-reflecting-boundary-condition-in-sph\/"},"modified":"2022-03-17T17:56:33","modified_gmt":"2022-03-17T17:56:33","slug":"non-reflecting-boundary-condition-in-sph","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/non-reflecting-boundary-condition-in-sph\/","title":{"rendered":"Non-Reflecting Boundary Condition in SPH"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello. In order to absorb and eliminate artificial waves coming from boundaries in impact modeling, non-reflecting boundary condition (NRBC) is suggested. However, as I&#039;ve seen so far in my models, NRBC does not work well for SPH nodes except for the fixed SPH nodes. I mean, non-fixed SPH nodes are deactivated when using BOUNDARY_SPH_NON_REFLECTING to simulate an impacted target. Is there anything else playing the same role as NRBC to absorb artificial rebounded waves from boundaries in non-fixed side SPH nodes? FYI, I usually fix the bottom SPH nodes, and the side SPH nodes making my target are free. Thanks in advance for sharing your thoughts.<\/p>\n","protected":false},"template":"","class_list":["post-166695","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["2086"],"_bbp_likes_count":["0"],"_bbp_subscription":["237793"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["166695"],"_bbp_forum_id":["27814"],"_bbp_engagement":["178074","237793"],"_bbp_voice_count":["2"],"_bbp_reply_count":["14"],"_bbp_last_reply_id":["206511"],"_bbp_last_active_id":["206511"],"_bbp_last_active_time":["2022-03-17 17:56:33"]},"test":"mohammadmahdi-nekahiryerson-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/166695","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\/166695\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=166695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}