{"id":168985,"date":"2022-04-28T17:14:36","date_gmt":"2022-04-28T17:14:36","guid":{"rendered":"\/forum\/forums\/topic\/solving-adaptive-frequency-process-hf3d-error-failure-in-solving-matrix-please-contact-ansys\/"},"modified":"2022-05-12T21:25:21","modified_gmt":"2022-05-12T21:25:21","slug":"solving-adaptive-frequency-process-hf3d-error-failure-in-solving-matrix-please-contact-ansys","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/solving-adaptive-frequency-process-hf3d-error-failure-in-solving-matrix-please-contact-ansys\/","title":{"rendered":"Solving adaptive frequency &#8230;. process hf3d error: Failure in solving matrix. Please contact Ansys"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I have designed GCPW (Coplanar waveguide with the ground) on a two-layered substrate.<\/p>\n<p>The sweep frequency is between 500MHz to 2.5 or 3GHz.<\/p>\n<p>The substrate used consists of a thin ferrite film (bias field is applied correctly) in 800nm to 3um scale on top of a 0.5 mm-thick dielectric.<\/p>\n<p>To simplify the simulation, I used sheet PEC as conductors.<\/p>\n<p>The goal was to reduce electrode width to somewhere comparable to the film thickness.<\/p>\n<p><\/p>\n<\/p>\n<p>When I simulated same structure but with 1um-thick copper conductor layers instead of PEC sheets, the solution converged.<\/p>\n<p>However, after reducing the electrode width to under 5um and applying sheet PEC conditions, my adaptive mesh does not converge.<\/p>\n<p>If the thin ferrite film was solely causing the problem, I believe the previous simulations with wider conductors should have failed too.<\/p>\n<p>But this only happens when the conductor and the thin film are both narrow and thin.<\/p>\n<p>I need help from someone who knows meshing well.<\/p>\n<p><\/p>\n<\/p>\n<p>** P.S. I have also tried inside-selection and on-selection mesh conditions too.<\/p>\n<p>** Is there any way to force the mesh length in certain direction be fixed?<\/p>\n","protected":false},"template":"","class_list":["post-168985","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["5623"],"_bbp_likes_count":["0"],"_bbp_subscription":["256730"],"_bbpmt_movedon":["2022-07-01 16:13:55"],"_bbpmt_movedfrom":["151970"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["168985"],"_bbp_forum_id":["27793"],"_bbp_engagement":["28551","211815"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["213391"],"_bbp_last_active_id":["213391"],"_bbp_last_active_time":["2022-05-12 21:25:21"]},"test":"jeong-minortheastern-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/168985","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\/168985\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=168985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}