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4.3 Reading and Writing Case and Data Files

Information related to the FLUENT simulation is stored in both, the case file and the data file. The commands for reading and writing these files are described in the following sections, along with commands for the automatic saving of case and data at specified intervals.

FLUENT can read and write either text or binary case and data files. Binary files require less storage space and are faster to read and write. By default, FLUENT writes files in binary format. To write a text file, disable the Write Binary Files check button in the Select File dialog box. In addition, you can read and write either text or binary files in compressed formats (see Section  4.1.5). FLUENT automatically detects the file type when reading.


If you adapt the grid, you must save a new case file as well as a data file. Otherwise the new data file will not correspond to the case file (for example, they will have different numbers of cells). If you have not saved the latest case or data file, FLUENT will warn you when you try to exit the program.

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