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comment How can I get the exit temperature of water entered 100 degree in a pipe surrounded by 30 degree water?
It sounds like you had an equation for the LMTD of a parallel flow configuration and wanted to just plug your numbers in. I honestly don't know how detailed your class is going, but you're probably starting out knowing the convective heat transfer coefficient (along with the others). It'll probably be faster to write the heat transfer differential equation and solve it than trying to look something up. It's going to be a decreasing exponential. Just write dT/dx with Newton's cooling law and go from there.
Apr
27
comment Navier-Stokes Energy Equation
I was equating the internal heat source (term with $q'''$ from the link) to heating from viscous heating (term with $\mu$ in the equation). This is unlike the other sources, because it doesn't involve heat entering the unit cell through the boundaries. It is thermal energy produced volumentrically inside the unit cell.
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26
answered Navier-Stokes Energy Equation
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comment Falling Raindrop with Asymptotic Acceleration
FYI, I think you left out density when substituting for $m$.
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