Menu

Discussion Forum

New Discussion
Filter

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Calculate the thermal gain of fluid

Posted Feb 22, 2017, 8:40 a.m. EST Fluid & Heat, Heat Transfer & Phase Change 1 Reply

Alex Moreno Bellostes
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi we are modelling a fluid across of pipe, inner the pipe the fluid recive a heat flux from a solid, when i calculate the energy gain of fluid =m*Cp*AT is higher than the global evaluation of heat source, It is not possible. Is there a global evaluation of energy gain of fluid in a stationary solver?

Thanks
1 Reply Last Post Feb 23, 2017, 6:11 a.m. EST
Alex Moreno Bellostes
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 8 years ago Feb 23, 2017, 6:11 a.m. EST
hi, i'm trying solve the problem i mentioned previosly, I don't find why when i applie a heat flux in a surface (0.0084m2) of 8000 W/m2 = 67.2W, the gain of fluid calculated by mCpdT = 83.93 *4.19*(293.97-293.16)*0.27778 is 79.12W, but if i calcule the (heat flux of outlet surface - heat flux of inlet surface) is 66.7 W similar to the heat flux =67.2 W, Do you know that I am doing wrong?

hi, i'm trying solve the problem i mentioned previosly, I don't find why when i applie a heat flux in a surface (0.0084m2) of 8000 W/m2 = 67.2W, the gain of fluid calculated by mCpdT = 83.93 *4.19*(293.97-293.16)*0.27778 is 79.12W, but if i calcule the (heat flux of outlet surface - heat flux of inlet surface) is 66.7 W similar to the heat flux =67.2 W, Do you know that I am doing wrong?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content