Assessment of Numerical Accuracy and Parallel Performance of OpenFOAM and its Reacting Flow Extension EBIdnsFoam

Abstract OpenFOAM is one of the most widely used open-source computational fluid dynamics tools and often employed for chemical engineering applications. However, there no systematic assessment OpenFOAM’s numerical accuracy parallel performance chemically reacting flows. For first time, this work provides a direct comparison between built-in flow solvers as well its extension EBIdnsFoam with four other, established high-fidelity combustion codes. Quantification achieved benchmark suite that has recently been by Abdelsamie et al. (Comput Fluids 223:104935, 2021. https://doi.org/10.1016/j.compfluid.2021.104935 ) Fourth-order convergence can be own cubic interpolation scheme excellent agreement other codes presented incompressible flows more complex cases including heat conduction molecular diffusion in multi-component mixtures. In terms performance, simulation non-reacting slower than codes, but similar scalability. case hydrogen flames interacting Taylor–Green vortex, differences low-Mach compressible are identified which highlight need investigations into reliable benchmarks solvers. The results from provide contribution fully implicit solver to thus valuable community. publicly available serve guide achieving highest basis future developments.