{"id":250674,"date":"2023-02-20T23:15:25","date_gmt":"2023-02-20T23:15:25","guid":{"rendered":"\/forum\/forums\/topic\/porous-media-ltne-model-no-heat-transfer-from-the-wall-2\/"},"modified":"2023-02-20T23:15:25","modified_gmt":"2023-02-20T23:15:25","slug":"porous-media-ltne-model-no-heat-transfer-from-the-wall-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/porous-media-ltne-model-no-heat-transfer-from-the-wall-2\/","title":{"rendered":"Porous media LTNE model \u2013 no heat transfer from the wall"},"content":{"rendered":"<p>I am modeling a natural porous media model, underground pipe heat exchanger for geothermal power generation. The ground is a porous media, and it is found out that the fluid temperature is different than the rock temperature-so trying to use the LTNE model.<br \/>I have different layers representing different rock thermal properties in the model. In need to apply LTNE in one of the layers. As soon I click LTNE model-it generates a new domain coinciding with the &nbsp;existing domain. It also generates additional walls.&nbsp;<br \/>For eg: there are three walls where the heat exchanger connects with the grout (layer between heat exchanger and ground), there are three walls: two walls are from porous fluid zones and i can easily apply &#8216;coupled&#8217; wall boundary condition, whereas for the additional wall generated; I chose to &#8216;via system coupling&#8217; boundary condition.<br \/>I see there is no heat transfer at all from this wall with this boundary condition.&nbsp;<br \/>could you please tell me if this the correct BC in this situation, if yes, why there is not heat transfer at all from this wall?<\/p>\n","protected":false},"template":"","class_list":["post-250674","topic","type-topic","status-closed","hentry","topic-tag-flow-through-porous-1","topic-tag-fluent","topic-tag-ltne-2"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["275439","199"],"_bbp_author_ip":["23.192.164.18"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["292"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["250674"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","275439"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["250966"],"_bbp_last_active_id":["250966"],"_bbp_last_active_time":["2023-02-22 09:39:36"]},"test":"sajjan12mail-ubc-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/250674","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\/250674\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=250674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}