To import an Ansys Polyflow data file, use the File/Import/Data file menu item.

File → Import → Data file

In the Choose a file panel, select the appropriate .dat file and click Open (or double-click the file name). You will then be prompted to specify the simulation where you want to store this data file. Ansys Polyman will store the file in the appropriate simulation subdirectory and create a leaf named filename.dat under Data file in the relevant branch of the Simulation(s) section of the project tree.

When importing a data file into a simulation, it may be a good idea to double-click it for running it with Polydata. By doing so, filenames of input and output files will be updated and made in agreement with the Polyman simulation environment.