Once I have modeled the pipe and applied the load temperatures of 70 internal and 20 external then solve I get temperatures for internal (64.4) and external (20) faces but when I try to add convection it makes no difference to the temperatures of the pipe either internally or externally.nThe internal fluid convection rate is 150 Wm^-2 K^-1 and external 12 Wm^-2 K^-1nThermal conductivity is 46 Wm^-1 K^-1nDimensions are inner radius 5 mm, outer radius 10 mm and length 4 mm.n
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