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The FOAM file format has not changed from version 2.0 in many years and so there is no longer a need for the 'version' entry in the FoamFile header to be required and to reduce unnecessary clutter it is now optional, defaulting to the current file format 2.0.
PDR test case Step to introduce the PDR fields: 1) Create zero-size patches for wall or/and coupled baffles in the boundary file. 2) Specify the boundary contitions for these patches in the fields. 3) Create the new PDR mesh using the PDRMesh utility.