The mesh file is written once at the beginning of the run and contains the surface grid coordinates, the element topology (element to node connectivity) and, for some sources, the nodal area vectors.
When multiple boundary conditions are selected the flow solver will concatenate these together to form one large region, as long as the boundaries do not span CFX domains. When the selected boundary conditions span CFX domains, they are broken up into one export surface per CFX domain.
Multiple export surfaces can be used for each export object and each export surface can be of a different type.
The filename for the export will be set to the name of the export results object. This can be overridden using the
Filename Prefixparameter.