Regarding the setup of periodic lateral boundary conditions, could you please provide more details? Thank you

[22hchen]

I would like to set up a rectangular shelf sea area, with the east-west direction being the main flow direction. I want to set the north-south boundaries as periodic boundaries. According to the user manual, I learned that this is related to the mod_plbc module. However, during my attempt to enable this module, I found that it requires plbc_node and plbc_cell files. I believe these files are related to the mapping of the north-south open boundaries, and the code in the module also indicates this. However, due to the limited information and the somewhat unclear mapping relationships reflected in the code, I am having difficulty deducing the meanings of the columns in the plbc_node and plbc_cell files. Could you please provide an example for my reference? Additionally, I am encountering compilation errors under parallel conditions. Thank you for your consideration!