The only exportation option in my fluent is fieldview unstructured data, with a suffix fvuns and fvreg. But when I import the data into fieldview by using unstructrued method, the resulatant geometry changed. All of my cylinders and curved surfaces became cuboids and flat surface.

I also tried to export fluent result as a fvc format for rampant-fluent method or unv format for fluent method, but there are no such options in my Fluent.

Anybody has experiences on this? Thanks for your help in advance.

I've never used fieldview before. But for Tecplot, I think a CGNS is more convenient that others. So, maybe you could try to export data in some other format?

In the newer versions of fieldview there is a fluent direct reader that will read fluent case/data files.

Also, if you export from fluent using text commands there is more options for fieldview exports.

Thank you, CDE, I will try to use commands export.