Validation and scalability of an open source parallel flow solver

Bricteux, Laurent; Zeoli, Stéphanie; Bourgeois, Nicolas

doi:10.1002/cpe.4330

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Zheng et al [28,29] used OpenFOAM to perform DNS of turbulent pipe flows with non-Newtonian fluids and compared the results with a spectral element-Fourier DNS code, where they found good agreement for meshes with hexahedral cells. Bricteux [30] applied OpenFOAM to various canonical test cases including the Taylor-Green vortex. OpenFOAM has also been used to perform quasi-DNS in the context of combustion.…”

Section: Introductionmentioning

confidence: 99%

Quasi-DNS Dataset of a Piloted Flame with Inhomogeneous Inlet Conditions

Zirwes

Zhang

Habisreuther

et al. 2019

Flow Turbulence Combust

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A quasi-DNS of the partially premixed turbulent Sydney flame in configuration FJ200-5GP-Lr75-57 has been conducted using detailed molecular diffusion for multi-component mixtures and complex reaction mechanisms. In order to study flame dynamics like regime transition in this flame for the development of new combustion models and to directly compare the quasi-DNS to different LES models, the simulation results are compiled into a data base. Because the simulation was performed with OpenFOAM, we demonstrate the quasi-DNS capabilities of OpenFOAM by performing canonical test cases. They attest that OpenFOAM’s cubic discretization has lower numerical diffusion compared to classical central difference schemes and can reach higher than second order convergence rate in some cases. The quasi-DNS of the Sydney flame is conducted with a self-developed reacting flow solver which is able to accurately compute molecular diffusion coefficients from kinetic gas theory and employs a fast implementation for detailed reaction mechanisms. The computational mesh is shown to be able to resolve the flow as well as the flame front sufficiently for the quasi-DNS. Comparisons with experimental data also show that the simulation can quantitatively reproduce measured time-mean and time-RMS statistics.

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Section: Introductionmentioning

confidence: 99%

Quasi-DNS Dataset of a Piloted Flame with Inhomogeneous Inlet Conditions

Zirwes

Zhang

Habisreuther

et al. 2019

Flow Turbulence Combust

View full text Add to dashboard Cite

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

Zirwes

Sontheimer

Zhang

et al. 2023

Flow Turbulence Combust

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

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