Heat Transfer Problem

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August 13, 2020, 13:42
Heat Transfer Problem
#1
New Member

Hüseyin Can Sülük
Join Date: Apr 2020
Posts: 21
Rep Power: 2
Hello everyone i have been trying to do an analyse with 3 coper pipe (check addd pics.) which carrying water and there is air outside. here are the requirements
temp of water is 25
air is at the room temp.
upper side of pipes gets 1000 W/m^2 heat
outer sides of pipes loosing heat through natural convection and radiation
and i am interested about water output temp and pipe outer temp.
i have created geo. as shown but i dont know how to arrange setup i need help guys
Attached Images
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 August 14, 2020, 01:24 #2 Senior Member   Alexander Join Date: Apr 2013 Posts: 1,386 Rep Power: 20 whats the point of air zone if you have boundary condition 1000 W/m^2 on pipe surfaces? __________________ best regards ****************************** press LIKE if this message helped you How to ask questions: https://www.cfd-online.com/Forums/si...tml#post612025

August 14, 2020, 05:53
#3
New Member

Hüseyin Can Sülük
Join Date: Apr 2020
Posts: 21
Rep Power: 2
Quote:
 Originally Posted by AlexanderZ whats the point of air zone if you have boundary condition 1000 W/m^2 on pipe surfaces?
boundry conditions are not completely given i am just trying make it like real life conditions 1000 W/m^2 is just applied the upper side of pipe lower side still losing heat via convection and radiation

 August 18, 2020, 01:52 #4 Senior Member   Alexander Join Date: Apr 2013 Posts: 1,386 Rep Power: 20 if you want to apply heat flux as boundary condition, you don't need external air in that region on the other hand you may use volumetric heat source instead, in that case you can have air zone connected to pipes: 1. to some part of pipe directly 2. to shell with artificial thickness, adjusted to part of pipe __________________ best regards ****************************** press LIKE if this message helped you How to ask questions: https://www.cfd-online.com/Forums/si...tml#post612025

 August 21, 2020, 04:39 #5 Senior Member   JSM Join Date: Mar 2009 Location: India Posts: 177 Rep Power: 16 Hello, I would recommend to do few basic tutorials in heat transfer to understand the set up method. It will accelerate your learning curve. __________________ With regards, JSM

 August 21, 2020, 05:35 #6 New Member   Hüseyin Can Sülük Join Date: Apr 2020 Posts: 21 Rep Power: 2 thank you for your suggestions guys i have completed this simulation at the moment i dont have enough time to upload results but if anyone needs setup or results i can upload it under this thread