{"id":238010,"date":"2022-10-18T17:35:47","date_gmt":"2022-10-18T17:35:47","guid":{"rendered":"\/forum\/forums\/topic\/e-field-ansys-and-cst-discrepancy\/"},"modified":"2022-10-18T17:35:47","modified_gmt":"2022-10-18T17:35:47","slug":"e-field-ansys-and-cst-discrepancy","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/e-field-ansys-and-cst-discrepancy\/","title":{"rendered":"E-field: Ansys and CST Discrepancy"},"content":{"rendered":"<p>Hi All. I am simulating a simple setup consisting of 2 parallel copper plates, separated by a distance d. I will be using the plates in application of capacitive wireless power transfer, so its dimensions are large.&nbsp;<\/p>\n<p>Length = 0.6m&nbsp; , Width = 0.275m , Thickness = 0.5mm, Air-gap distance d = 0.12m<\/p>\n<p>However, I see discrepancies when I compared measured E-field values on Ansys (both from Maxwell and HFSS) with CST. Excitation voltage is 12kV for Maxwell electrostatics and 12kV peak for sinusoidal sources in HFSS.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/18-10-2022-1666113789-mceclip0.png\"><\/p>\n<p>As seen from this setup picture, I am measuring the E-field along the entire line (in green, along y-axis). Here is a comparison of the discrepancy found between Ansys &amp; CST data:<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/18-10-2022-1666114004-mceclip1.png\"><\/p>\n<p>I wanted to ask of the possible reasons for this discrepancy. I have tried making the mesh very fine, increased the minimum number of passes, and made the convergence criteria very strict. Still, I observe such a difference in E-field values when comparing both the softwares.<\/p>\n<p>Note: Simulations were done not only using electrostatics in Maxwell but also multiple frequencies in HFSS. Both HFSS &amp; Maxwell pretty much give the same E-field values but they are different from what I obtain in CST.<\/p>\n","protected":false},"template":"","class_list":["post-238010","topic","type-topic","status-closed","hentry","topic-tag-AnsysMaxwellelectronics-1","topic-tag-ansys-hfss","topic-tag-electric-field-1","topic-tag-hfss","topic-tag-maxwell","topic-tag-wireless"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["265038","229657"],"_bbp_author_ip":["23.56.168.190"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["946"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["238010"],"_bbp_forum_id":["27793"],"_bbp_engagement":["229657","265038"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["238028"],"_bbp_last_active_id":["238028"],"_bbp_last_active_time":["2022-10-18 19:11:22"]},"test":"sr944cornell-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/238010","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\/238010\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=238010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}