{"id":159601,"date":"2021-06-18T04:09:22","date_gmt":"2021-06-18T04:09:22","guid":{"rendered":"\/forum\/forums\/topic\/absorptivity-and-emissivity-in-fluent\/"},"modified":"2021-06-22T11:01:58","modified_gmt":"2021-06-22T11:01:58","slug":"absorptivity-and-emissivity-in-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/absorptivity-and-emissivity-in-fluent\/","title":{"rendered":"Absorptivity and Emissivity in Fluent"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello All,<\/p>\n<p>In fluent, I am trying to model asphalt on top of concrete under radiation, conduction, and convection. Below are the questions:<\/p>\n<ol>\n<li>There is a Absorption Coefficient [m-1] in the material definition. <\/li>\n<li>There is a Absorptivity under Boundary Conditions\/Wall\/Any wall window. There is a section call &quot;Absorptivity&quot; for both Direct Visible and Direct IR.<\/li>\n<\/ol>\n<p>Which one is the place to set absorptivity of concrete (absorption coefficient of concrete = 0.65)? Why there are two different locations for the potentially same parameter?<\/p>\n<p><\/p>\n<\/p>\n<p>Emissivity of concrete (0.88) should be set under Boundary Conditions\/Wall\/Any wall window, under &quot;Internal Emissivity&quot;. Is this correct?<\/p>\n<p><\/p>\n<\/p>\n<p>Thanks!<\/p>\n<p>Brandon<\/p>\n","protected":false},"template":"","class_list":["post-159601","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_view_count":["13303"],"_bbp_likes_count":["0","0"],"_bbp_forum_subforum_count":["0"],"_btv_view_count":["3212"],"_bbp_subscription":["254904"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["159601"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","22555","180791"],"_bbp_voice_count":["3"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["182588"],"_bbp_last_active_id":["182588"],"_bbp_last_active_time":["2021-06-22 11:01:58"]},"test":"jiezougt"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/159601","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\/159601\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=159601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}