[raptor333]

Hi
i am a new openfoam user, i am stuck with a simulation of the temperature evolution of a fluid in a pipe exposed to air, but every time i try to make the mesh for it splitmeshregions says only one region, doing nothing, i think that is caused by snappyhexmesh doen't detect my stl file or emesh file, there are no errors given at any stage of creating the mesh, the only thing that it gives is a warning:
FOAM Warning :
From Foam::treeBoundBox::treeBoundBox(const Foam::UList<Foam::Vector<double> >&)
in file meshes/treeBoundBox/treeBoundBox.C at line 70
No bounding box for zero-sized pointField

i am trying for weeks now to get splitMeshregions to work i have tried toposetdict, changing locationsInMesh ( because i do not know of the coordinates you chouse must be in the middle of the region or just in the region), i tried to find anything on the internet that could help, but either they didn't give the solution or i didn't understand it, does anyone know how to solve this ?

i set the files of the case in this link: https://1drv.ms/f/s!Agflt1nDTyHxhlNo...BjJ-I?e=ktYuwb