{"id":167783,"date":"2022-03-27T09:12:24","date_gmt":"2022-03-27T09:12:24","guid":{"rendered":"\/forum\/forums\/topic\/ansys-fluent-microchannel-simulation\/"},"modified":"2022-04-19T14:39:17","modified_gmt":"2022-04-19T14:39:17","slug":"ansys-fluent-microchannel-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-fluent-microchannel-simulation\/","title":{"rendered":"ANSYS FLUENT MICROCHANNEL SIMULATION"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I am trying to simulate microchannel heat transfer using Ansys Fluent. It is a simple simulations where I want to investigate the Nusselt number of the heat transfer. But before this, i need to verify the simulation by comparing the simulation result with the formula q= mass flow rate X specific heat capacity X (temperature difference). The temperature difference I take is temperature fluid outlet minus temperature fluid inlet. Q, mass flow rate, and specific heat capacity is the input value, and I found that the temperature difference is not the actual value from what I calculate.<\/p>\n<p><\/p>\n<\/p>\n<p>Geometry dimension<\/p>\n<p>10 mm length X 0.25 mm width X 0.35 mm height for solid domain and 10 mm length x 0.1 mm width x 0.2 mm height for fluid domain, heat flux is 1e6 W\/m2<\/p>\n<p><\/p>\n<\/p>\n<p>Based on this the heat flux supplied is 2.5 W, the velocity is 1.41 (based on 187 Reynolds number) and mass flow rate becomes 2.82&#215;10-5, specific heat of water is 4183.56<\/p>\n<p>The temperature outlet from fluent simulation is 319 K <\/p>\n<p>The temperature inlet is 293 K<\/p>\n<p>The temperature difference is 26 K<\/p>\n<p>If we use the formula Q=mcT , the temperature difference should be around 21-22K<\/p>\n<p>Anyone can assist what is the issue for this problem?<\/p>\n<p>It is just a simple heat transfer problem<\/p>\n","protected":false},"template":"","class_list":["post-167783","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["1873"],"_bbp_likes_count":["0"],"_bbp_subscription":["250375"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["167783"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","15977","176208"],"_bbp_voice_count":["3"],"_bbp_reply_count":["11"],"_bbp_last_reply_id":["209790"],"_bbp_last_active_id":["209790"],"_bbp_last_active_time":["2022-04-19 14:39:17"]},"test":"yew511"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/167783","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\/167783\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=167783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}