Apologies for getting back to you this late. I have just been working away with the simulation.
I am now measuring the Area-Weighted Average of the Total Surface Heat Flux from the pipe walls of interest; however, I am uncertain as to what this total surface heat flux indicates. Does the total surface heat flux in Fluent indicate the convective heat transfer from the fluid to the pipe wall, or does it indicate the total heat transfer (convective + conductive heat transfer) generated from the fluid to the pipe wall?
Furthermore, I am also measuring the Area-Weighted Average of the Surface Heat Transfer Coefficient on the pipe wall that is in contact with the hot fluid. Does that surface heat transfer coefficient indicate the convective or conductive heat transfer coefficient of the pipe wall? Apologies if this question is rather trivial.
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