[2770363742@qq.com]

Hello everyone, I am a newcomer to learning SU2. Recently, I have been studying the issue of SU2 handling multi-zone meshes. I have noticed that in the `config_template` (Figure 1), in addition to the need to describe the shared edges between the two zones (MAKER_ZONE_INTERFACE) and the type (MARKER_FLUID_INTERFACE), it also defines what kind of interpolation method to use. However, in the test case (Figure 2), I did not find a description of the interpolation method. Why is that?

[lalatuobu]

I believe when no KIND_INTERPOLATION is provided the default interpolation is "NEAREST_NEIGHBOR" where the donor is essentially the shortest distance vertex from the receiver.

[2770363742@qq.com]

Thank you for your reply！