{"id":160124,"date":"2022-09-26T10:00:32","date_gmt":"2022-09-26T10:00:32","guid":{"rendered":"\/knowledge\/forums\/topic\/discovery-aim-tutorial-permanent-magnetic-circuit-with-air-gap\/"},"modified":"2023-08-16T06:33:33","modified_gmt":"2023-08-16T06:33:33","slug":"discovery-aim-tutorial-permanent-magnetic-circuit-with-air-gap","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/discovery-aim-tutorial-permanent-magnetic-circuit-with-air-gap\/","title":{"rendered":"Discovery AIM tutorial &#8211; Permanent Magnetic Circuit with Air Gap"},"content":{"rendered":"<p><strong>This example is taken from <u><a href=\"https:\/\/confluence.cornell.edu\/display\/SIMULATION\/ANSYS+AIM+-+Permanent+Magnetic+Circuit+with+Air+Gap\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Cornell University&#8217;s ANSYS AIM Learning Modules<\/a><\/u><\/strong><\/p>\n<hr \/>\n<nav class=\"toc\">Contents<\/p>\n<ol class=\"toc__section -lev0\">\n<li class=\"toc__item -lev0\">Learning Goals<\/li>\n<li class=\"toc__item -lev0\">Problem Specification<\/li>\n<li class=\"toc__item -lev0\">Pre-Analysis<\/li>\n<li class=\"toc__item -lev0\">Geometry<\/li>\n<li class=\"toc__item -lev0\">Physics\u00a0Setup<\/li>\n<li class=\"toc__item -lev0\">Results Evaluation<\/li>\n<\/ol>\n<\/nav>\n<h4 content_id=\"learning-goals\" class=\"toc__permalink\" content_id=\"learning-goals\" class=\"toc__permalink\"  id=\"LEARNING-GOALS\"><strong>Learning Goals<\/strong><\/h4>\n<p>In this tutorial, you will learn to:<\/p>\n<ul>\n<li>Determine magnetic flux density and field intensity in the permanent magnet and the air gap<\/li>\n<\/ul>\n<hr \/>\n<h4 content_id=\"problem-specification\" class=\"toc__permalink\" content_id=\"problem-specification\" class=\"toc__permalink\"  id=\"PROBLEM-SPECIFICATION\"><strong>Problem Specification<\/strong><\/h4>\n<p>A permanent magnet circuit consists of a highly permeable core, a permanent magnet, and an air gap. Determine the magnetic flux density and field intensity in the permanent magnet and the air gap.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157009\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/HM-8.png\" alt=\" width=\"456\" height=\"372\" \/><\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<h4 content_id=\"pre-analysis\" class=\"toc__permalink\" content_id=\"pre-analysis\" class=\"toc__permalink\"  id=\"PRE-ANALYSIS\"><strong>Pre-Analysis\u00a0<\/strong><\/h4>\n<p><u>Governing Equation<\/u>:<\/p>\n<p>Magnetostatics is the study of magnetic fields in devices where the magnetic field is generated from DC (steady) currents and\/or permanent magnets. \u00a0Magnetostatics is a special case of Maxwell\u2019s equations, which form the basis of electromagnetism.<\/p>\n<p>For magnetostatics the electric field inside of a current carrying coil is completely decoupled from the magnetic field, and the following Maxwell\u2019s equations are solved for magnetostatics &#8211;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-157010\" src=\"\/knowledge\/wp-content\/uploads\/sites\/4\/2022\/08\/HM-9.png\" alt=\" width=\"183\" height=\"124\" \/><\/p>\n<p>Where\u00a0\u2207\u00a0denotes divergence, H is the magnetic field intensity, J is the current density and B is the magnetic flux density.<\/p>\n<hr \/>\n<h4 content_id=\"geometry\" class=\"toc__permalink\" content_id=\"geometry\" class=\"toc__permalink\"  id=\"GEOMETRY\"><strong>Geometry<\/strong><\/h4>\n<p><a href=\"https:\/\/confluence.cornell.edu\/download\/attachments\/348593840\/permanent%20magnetic%20circuit%20with%20air%20gap%20geometry.scdoc?version=1&amp;modificationDate=1502394729000&amp;api=v2\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Download the\u00a0tutorial file<\/a><\/p>\n<p>The following video shows how to import the geometry in Discovery AIM.<\/p>\n<p><iframe loading=\"lazy\" class=\"vidyard_iframe\" src=\"\/\/play.vidyard.com\/STLfrqCWvmhkk9o88ggNC1.html?\" width=\"700\" height=\"400\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<hr \/>\n<h4 content_id=\"physicssetup\" class=\"toc__permalink\" content_id=\"physicssetup\" class=\"toc__permalink\"  id=\"PHYSICS-SETUP\"><strong>Physics\u00a0Setup<\/strong><\/h4>\n<p>The following video shows how to assign materials and its properties.<\/p>\n<p><iframe loading=\"lazy\" class=\"vidyard_iframe\" src=\"\/\/play.vidyard.com\/xuT3KofbaHWDUgyoXd2uWe.html?\" width=\"700\" height=\"400\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<hr \/>\n<h4 content_id=\"results-evaluation\" class=\"toc__permalink\" content_id=\"results-evaluation\" class=\"toc__permalink\"  id=\"RESULTS-EVALUATION\"><strong>Results Evaluation<\/strong><\/h4>\n<p>The following video shows how to compute magnetic flux density.<\/p>\n<p><iframe loading=\"lazy\" class=\"vidyard_iframe\" src=\"\/\/play.vidyard.com\/U2EuhVa3aNvro4w3raaaEz.html?\" width=\"700\" height=\"400\" frameborder=\"0\" scrolling=\"no\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"template":"","class_list":["post-160124","topic","type-topic","status-publish","hentry","topic-tag-aim-tutotrial","topic-tag-discovery-aim","topic-tag-electromagnetics-suite"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"This example is taken from Cornell University&#039;s ANSYS AIM Learning Modules Contents Learning Goals Problem Specification Pre-Analysis Geometry Physics Setup Results Evaluation Learning Goals In this tutorial, you will learn to: Determine magnetic flux density and field intensity in the permanent magnet and the air gap Problem Specification A permanent magnet circuit consists of a highly\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" 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