I am trying to simulate (using Fluent 12.1) a flow of hot oil flowing in a steel pipe surrounded by a solid material (just like a heat pipe). As the oil flows it warms up the solid material. Now I ask you: how can I define the solid region surrounding the pipe? How can I make Fluent simulate that solid correctly? I hope my question was clear. I wait for your answers!

Originally Posted by MrDaimon (Post 458709) Hi all, I am trying to simulate (using Fluent 12.1) a flow of hot oil flowing in a steel pipe surrounded by a solid material (just like a heat pipe). As the oil flows it warms up the solid material. Now I ask you: how can I define the solid region surrounding the pipe? How can I make Fluent simulate that solid correctly? I hope my question was clear. I wait for your answers!

Originally Posted by MrDaimon (Post 458715) Thank you so much. Can you explain me how can I divide my model into two different regions? Do I have to do that during the meshing phase? I used Gambit for the generation of the geometry. Thanks again!

Originally Posted by MrDaimon (Post 458718) I want you to know that I'm trying to simulate the flux usign a 2D domain, corrisponding to a half of the section of this pipe. I used Gambit for generating the mesh. Now I ask you: do I need a multibody tool during the mesh generation? Do I have to activate multiphase model during the simulation? Thank you so much!