{"id":162037,"date":"2023-01-25T07:34:06","date_gmt":"2023-01-25T07:34:06","guid":{"rendered":"\/knowledge\/forums\/topic\/when-using-explicit-dynamics-or-autodyn-component-systems-to-simulate-explosions-how-to-calculate-the-specific-internal-energy-for-the-ambient-air\/"},"modified":"2023-07-31T12:36:47","modified_gmt":"2023-07-31T12:36:47","slug":"when-using-explicit-dynamics-or-autodyn-component-systems-to-simulate-explosions-how-to-calculate-the-specific-internal-energy-for-the-ambient-air","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/when-using-explicit-dynamics-or-autodyn-component-systems-to-simulate-explosions-how-to-calculate-the-specific-internal-energy-for-the-ambient-air\/","title":{"rendered":"When using Explicit Dynamics or Autodyn Component systems to simulate explosions, how to calculate the specific internal energy for the ambient air?"},"content":{"rendered":"<p>The following formula can be used to get the correct specific internal energy of ambient air. E=P\/(rho*(GAMA-1)), where P is air ambient pressure, GAMA is the ideal gas constant (usually 1.4), rho is the air ambient density. When the system units is mm\/mg\/ms, the specific internal energy of ambient air is 2.068E5 J\/Kg.<\/p>\n","protected":false},"template":"","class_list":["post-162037","topic","type-topic","status-publish","hentry","topic-tag-4431","topic-tag-autodyn","topic-tag-explicit-dynamics","topic-tag-general","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27789"],"_bbp_last_active_time":["1-24-2023  20:20:14"],"_bbp_author_ip":["23.56.168.180"],"_btv_view_count":["1358"],"siebel_km_number":["533382"],"product_version":["17"],"km_published_date":["2006-09-07T08:00:22.000Z"],"family":["Structural Mechanics"],"application_name":["AUTODYN"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/162037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/162037\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=162037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}