I have saved backup files using the output option 'Selected Variables', but I forgot to turn on 'Include Mesh'. Now I can not read the results into CFX Post. Can I restore the mesh information?
Yes, you can. Concatenate the result or backup file with its original definition file.
Use the following command under Linux:
cat StaticMixer_Mesh.def StaticMixer_noMesh_001.res >StaticMixer_Mesh_001.res
Windows needs to be told that the files are binary. So, you have to add the option /B as follows:
copy StaticMixer_Mesh.def /B + StaticMixer_noMesh_001.res /B StaticMixer_Mesh_001.res /B
Now CFX Post will be able to read your Results.