{"id":164698,"date":"2021-12-08T14:45:53","date_gmt":"2021-12-08T14:45:53","guid":{"rendered":"\/forum\/forums\/topic\/how-to-properly-simulate-converge-chiral-fdtd-simulation\/"},"modified":"2023-08-02T22:40:42","modified_gmt":"2023-08-02T22:40:42","slug":"how-to-properly-simulate-converge-chiral-fdtd-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-properly-simulate-converge-chiral-fdtd-simulation\/","title":{"rendered":"How to properly simulate\/converge chiral FDTD simulation?"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello,<\/p>\n<p>I have been trying to simulate the circular dichroism spectrum of various chiral materials. My setup is basically an ordinary simulation box with orthogonal plane-polarized wave sources out of phase by (+\/-) 90 degrees to create RCP\/LCP light. I saw other forum topics about this and I believe this is the convention. The issue I keep running into is non-convergence to the auto-shutoff level (currently 10^-6). Any other non-polarized sources reach the auto-shutoff quickly (&lt; 2 hrs). I have attached an image of the workspace to give a better idea, but please let me know if there is any other information I should include. The spring model in the simulation box is not my end-goal but was created to hopefully speed up troubleshooting as it should exhibit CD properties.<\/p>\n<p>Thank you for your help.<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/563\/DIZB9HYMA81Z.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/563\/DIZB9HYMA81Z.png\" alt=\"2021-12-08 09_43_57-.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-164698","topic","type-topic","status-closed","hentry","topic-tag-circular-polarization-1","topic-tag-fdtd","topic-tag-LumericalFDTD-1","topic-tag-optics","topic-tag-simulation"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["1958"],"_bbp_likes_count":["0"],"_bbp_subscription":["16017","39090","2592"],"_bbp_status":["publish"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["164698"],"_bbp_forum_id":["27833"],"_bbp_engagement":["2592","16017","39090"],"_bbp_voice_count":["3"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["296208"],"_bbp_last_active_id":["296208"],"_bbp_last_active_time":["2023-08-02 22:40:31"]},"test":"jgoogasiiu-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/164698","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\/164698\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=164698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}