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plz help:temprature reduces at the end of channel |
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November 18, 2012, 06:38 |
plz help:temprature reduces at the end of channel
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#1 |
New Member
maryam
Join Date: Jan 2012
Posts: 11
Rep Power: 14 |
I am writing a fortran code to moled a 3d microchannel heatsink...I have a heat flux from bottomn boundary and all others are isolated. water enters at known temprature of 20C, and az the lengh of microchannel is 150 times bigger than hydrolic diameter, I udes thermally developed boundary condition (dT/dx=0) at the end of channel (nearly 5,6 nodes from the end) I see a little reduction in my temprature that leads problems in defining q(heat flux)
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November 18, 2012, 09:07 |
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#2 |
Senior Member
Ahmed
Join Date: Mar 2009
Location: NY
Posts: 251
Rep Power: 18 |
you have one boundary with heat flux, the rest are all isolated,
how heat energy is going to leave your system? |
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November 19, 2012, 10:24 |
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#3 |
New Member
maryam
Join Date: Jan 2012
Posts: 11
Rep Power: 14 |
hi head ahmet
that boundary conditions are implied to silid part which is cooled by the fluid that flows inside ...consider fluid flows in a channel that boundaries are implied to channel outer wall and the wall thickness is big enough to be considered. |
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Tags |
microchannel, temprature |
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