{"id":289156,"date":"2023-06-16T13:28:56","date_gmt":"2023-06-16T13:28:56","guid":{"rendered":"\/forum\/forums\/topic\/re-emissivity-values-fluent-combustion-radiation\/"},"modified":"2023-06-16T13:30:40","modified_gmt":"2023-06-16T13:30:40","slug":"re-emissivity-values-fluent-combustion-radiation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/re-emissivity-values-fluent-combustion-radiation\/","title":{"rendered":"RE: Emissivity values (Fluent &#8211; Combustion, Radiation)"},"content":{"rendered":"<div>\n<div>Hi all,<\/p>\n<p>We are seeking advice choosing an appropriate assumption for refractory wall and water cooled tube wall emissivities in a high temperature furnace.<\/p><\/div>\n<\/div>\n<div>&nbsp;<\/div>\n<div>The furnace 0.9 x 0.9 x 3.5m.The furnace walls are made of light density,&nbsp;vacuum formed,&nbsp;alumina fibre. Furnace is natural gas and hydrogen fire, and it is fitted with stainless steel water cooled tubes<\/div>\n<div>The focus of the work is predicting radiative heat transfer to the water cooled tubes. These are positioned 50mm inboard of the side walls. There are 5 tubes along each side wall ~0.6m apart.<\/div>\n<div>Refractory wall temperatures are likely to be in the region of 1200-1400degC and water cooled tube surface temperatures ~100degC.<\/p>\n<p>Could you advise me on this please?&nbsp;<\/p>\n<p>Thanks<br \/>Jee&nbsp;<\/div>\n","protected":false},"template":"","class_list":["post-289156","topic","type-topic","status-closed","hentry","topic-tag-cfd-combustion","topic-tag-fluent","topic-tag-radiation","topic-tag-species-transport"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["252005","15977"],"_bbp_author_ip":["23.217.200.71"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["394"],"_edit_lock":["1686922155:177795"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["289156"],"_bbp_forum_id":["27796"],"_bbp_engagement":["15977","252005"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["289509"],"_bbp_last_active_id":["289509"],"_bbp_last_active_time":["2023-06-20 09:35:19"]},"test":"j-loongheesheffield-ac-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/289156","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\/289156\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=289156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}