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Calculate the thermal gain of fluid

Posted 22 feb 2017, 08:40 GMT-5 Fluid & Heat, Heat Transfer & Phase Change 1 Reply

Alex Moreno Bellostes
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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 23 feb 2017, 06:11 GMT-5
Alex Moreno Bellostes
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Posted: 8 years ago 23 feb 2017, 06:11 GMT-5
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?

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