{"id":367861,"date":"2024-05-21T13:46:23","date_gmt":"2024-05-21T13:46:23","guid":{"rendered":"\/forum\/forums\/topic\/choosing-auto-shutoff-min\/"},"modified":"2024-05-21T13:46:23","modified_gmt":"2024-05-21T13:46:23","slug":"choosing-auto-shutoff-min","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/choosing-auto-shutoff-min\/","title":{"rendered":"Choosing “auto shutoff min”"},"content":{"rendered":"

Hi all,<\/p>\n

I am simulating resonator structures with periodic boundary conditions (and normal source incident angle) in FDTD where I have increased the simulation time such that the standard autoshutoff level of 1e-5 is reached.<\/p>\n

However, for some resonators, the transmission result still has “ripples”. Following the instructions on Transmission Results Greater Than One – Ansys Optics<\/a>, I have set the PML boundaries to “steep angle” instead of “standard”. But the ripples are still there:<\/p>\n

\"\"<\/p>\n

When I decrease the “auto shutoff min” to 1e-6 the ripples of the result above are gone:<\/p>\n

\"\"<\/p>\n

In Auto-shutoff level (ansys.com)<\/a>, it was stated that the default threshold level of 1e-5 is low enough for most simulations, but is there a way to determine what the necessary threshold is?<\/p>\n

Kind regards,<\/p>\n

Kim<\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-367861","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["135085","33648"],"_bbp_author_ip":["184.24.96.177"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["147"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["367861"],"_bbp_forum_id":["27833"],"_bbp_engagement":["33648","135085"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["367911"],"_bbp_last_active_id":["367911"],"_bbp_last_active_time":["2024-05-21 16:28:44"]},"test":"kim-buitno-nl"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/367861","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\/367861\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=367861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}