{"id":251022,"date":"2023-02-22T14:26:25","date_gmt":"2023-02-22T14:26:25","guid":{"rendered":"\/forum\/forums\/topic\/fdtd-3d-convergence\/"},"modified":"2023-02-22T14:29:58","modified_gmt":"2023-02-22T14:29:58","slug":"fdtd-3d-convergence","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fdtd-3d-convergence\/","title":{"rendered":"FDTD 3D convergence"},"content":{"rendered":"<p>Hi, thanks in advance for your attention.<br \/>I am using FDTD 3D in Lumerical to model and analyze a Multi-Mode Interferometer coupler but the simulation stops for divergence when it is 60\/70% of the total simulation time.<br \/>I have tried to change the mesh setting by using a dense mesh and a less dense mesh, or by increasing the distance of the boundaries in the simulation region but still same errors occur.<br \/>I will show some pictures about the setting and the structure implemented.<br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076070-wa1.png\" alt=\"\"><br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076088-wa2.png\" alt=\"\"><br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076107-wa3.png\" alt=\"\"><br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076125-wa4.png\" alt=\"\"><br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076142-wa5.png\" alt=\"\"><br \/><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/02\/22-02-2023-1677076160-wa6.png\" alt=\"\"><br \/>Best regards<br \/>Thanks in advance for your availability.<\/p>\n","protected":false},"template":"","class_list":["post-251022","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["274734","2592"],"_bbp_author_ip":["23.192.164.18"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["237"],"_edit_lock":["1677076036:205482"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["251022"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","274734"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["251281"],"_bbp_last_active_id":["251281"],"_bbp_last_active_time":["2023-02-23 19:14:09"]},"test":"chinna-devarapumtu-ie"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/251022","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\/251022\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=251022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}