The software tool OpenFOAM is used extensively in high-performance computing (HPC) to create simulations but is known to have challenging I/O patterns. To uncover the reasons why, we profiled OpenFOAM with the Altair Breeze™ and Altair Mistral™ I/O profiling tools on the Oracle bare metal cloud. The results detailed in this white paper provide a clear picture about why OpenFOAM performs slowly at times and highlight key areas for improvement.