openfoam conda
A possibility to install OpenFOAM without admin rights is conda:
https://github.com/HenningScheufler/conda-openfoam
The installation process would be quite straightforward. Download and install the miniconda then run following commands:
conda create -n openfoam # create new env named openfoam
conda activate openfoam # activate the enviroment
conda install openfoam -c conda-forge # download and install openfoam from conda forge
This could simplify the installation on workstations. For HPC spack is probably the better option