Version 1
: Received: 29 August 2024 / Approved: 1 September 2024 / Online: 2 September 2024 (11:36:06 CEST)
How to cite:
Davidson, J.; Nava, V.; Andersen, J.; Kramer, M. B. Exploiting Axisymmetry to Optimize CFD Simulations -Heave Motion and Wave Radiation of a Spherical Buoy. Preprints2024, 2024090095. https://doi.org/10.20944/preprints202409.0095.v1
Davidson, J.; Nava, V.; Andersen, J.; Kramer, M. B. Exploiting Axisymmetry to Optimize CFD Simulations -Heave Motion and Wave Radiation of a Spherical Buoy. Preprints 2024, 2024090095. https://doi.org/10.20944/preprints202409.0095.v1
Davidson, J.; Nava, V.; Andersen, J.; Kramer, M. B. Exploiting Axisymmetry to Optimize CFD Simulations -Heave Motion and Wave Radiation of a Spherical Buoy. Preprints2024, 2024090095. https://doi.org/10.20944/preprints202409.0095.v1
APA Style
Davidson, J., Nava, V., Andersen, J., & Kramer, M. B. (2024). Exploiting Axisymmetry to Optimize CFD Simulations -Heave Motion and Wave Radiation of a Spherical Buoy. Preprints. https://doi.org/10.20944/preprints202409.0095.v1
Chicago/Turabian Style
Davidson, J., Jacob Andersen and Morten Bech Kramer. 2024 "Exploiting Axisymmetry to Optimize CFD Simulations -Heave Motion and Wave Radiation of a Spherical Buoy" Preprints. https://doi.org/10.20944/preprints202409.0095.v1
Abstract
In ocean engineering, accurate and efficient numerical simulations are crucial. Leveraging axisymmetry vastly enhances the efficiency of a simulation, reducing a three-dimensional scenario to a two-dimensional simulation. Exploiting axisymmetry enables a significant reduction in computational demand while maintaining simulation fidelity. In this paper, axisymmetry is leveraged to perform a large ensemble of simulations, in order to evaluate and maximise the accuracy and efficiency of a Computational Fluid Dynamics (CFD) simulation. In particular, the free decay motion and wave radiation from a heaving semi-submerged sphere are simulated, using the Reynolds Averaged Navier Stokes (RANS) solver, interFOAM, in the opensource finite volume CFD software OpenFOAM. Validated against highly accurate experimental data, extensive parametric studies are conducted, previously limited by computational constraints, which facilitate the refinement of simulation setups. More than 50 iterations of the same heaving sphere simulation are performed, informing efficient trade-offs between computational cost and accuracy across various simulation parameters and mesh configurations. Ultimately, by employing axisymmetry, this research contributes to the development of more accurate and efficient numerical modeling in ocean engineering.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
