3D pipe in fleunt-unsteady
 

hi
in my fluent show shadow of interior wall ,but it don't work.
in gambit i have two zone water flow in cylinder and cylinder .when hot flow pass the cylinder ,cylinder temperature Remains The initial value , when my interring wall is coupled,why cylinder temperature Remains The initial value??
the image is attached.:confused::confused::(
http://8pic.ir/images/r08qlwh567aaaooowcm6.jpg
Ty all:)