The interpolation of results from one mesh to the other makes use of a "neutral" results file in a format that is based on geometrical locations only. (Ordinary finite-element formats make use of element topological relationships.) This is called a CSV (comma separated variables) file in Ansys Polydata; it is common for tabulated data and can also be read into spreadsheet programs such as Excel.

A CSV file contains a list of data points and a list of values. Fields are recognized by their (case-sensitive) names. When you save Ansys Polyflow results in a CSV format, a data entry is written for each nodal location at which the quantity is defined. See Using the CSV File to Initialize Solution Variables for an example.