Reply To: In Fluent UDF, when iterating over two separate processes where the body mesh is

[Rob]

What is the goal of the modelling work? Fluent's node IDs are used in the case file to link to the data, but aren't generally used elsewhere. They are also reordered by a variety of actions so I'd not rely on them: it's also why we typically save case and data and not just data.  We'd typically use the coordinates.