{"id":355530,"date":"2024-03-06T05:11:19","date_gmt":"2024-03-06T05:11:19","guid":{"rendered":"\/forum\/forums\/topic\/resistance-and-ohmic-loss-results-dont-make-sense-in-maxwell-3d\/"},"modified":"2024-03-06T05:11:19","modified_gmt":"2024-03-06T05:11:19","slug":"resistance-and-ohmic-loss-results-dont-make-sense-in-maxwell-3d","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/resistance-and-ohmic-loss-results-dont-make-sense-in-maxwell-3d\/","title":{"rendered":"Resistance and ohmic loss results don&#8217;t make sense in maxwell 3D"},"content":{"rendered":"<p>Hi,<\/p>\n<p>I am trying to simulate a basic air-core solenoid inductor with foil wire (as shown in the figure below) in maxwell 3D using eddy current solver.&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/06-03-2024-1709700636-mceclip0.png\"><\/p>\n<p>When I set current excitation (1A solid), also set eddy effects for copper coil and simulate it, the inductance value that I get makes some sense but the resistance value is completely off and it isn&#8217;t even close to my analytical calculations. Theoretically, resistance should depend on frequency but the resistance values that I get are almost independent of frequency as shown in the table below.<\/p>\n<p><strong>Resistance values:<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/06-03-2024-1709701062-mceclip2.png\" width=\"481\" height=\"181\">&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Inductance values:<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/06-03-2024-1709701114-mceclip3.png\" width=\"487\" height=\"181\"><\/p>\n<p>I have also simulated the same inductor in HFSS too and the results I get there completely makes sense and are closer to my calculations. Table below shows the resistance values with respect to frequency.<\/p>\n<p><strong>Resistance values (HFSS):<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/06-03-2024-1709701499-mceclip4.png\" width=\"496\" height=\"188\"><\/p>\n<p>Not sure what wrong am I doing in my maxwell 3d simulations. Can someone please help me solve this issue?<\/p>\n","protected":false},"template":"","class_list":["post-355530","topic","type-topic","status-closed","hentry","topic-tag-3d-maxwell-simulation","topic-tag-eddy-current-solver","topic-tag-inductance-calculation-1","topic-tag-resistance"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["340667","13923"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["623"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["355530"],"_bbp_forum_id":["27793"],"_bbp_engagement":["13923","340667"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["355807"],"_bbp_last_active_id":["355807"],"_bbp_last_active_time":["2024-03-07 04:40:50"]},"test":"dke27cornell-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/355530","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\/355530\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=355530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}