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Article

An Effective Mesh Deformation Approach for Hull Shape Design by Optimization

1
Department of Electrical, Electronic and Telecommunications Engineering and Naval Architecture (DITEN), University of Genova, Via Montallegro 1, 16126 Genova, Italy
2
Department of Civil, Chemical and Environmental Engineering (DICCA),University of Genova, Via Montallegro 1, 16126 Genova, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Md Jahir Rizvi
J. Mar. Sci. Eng. 2021, 9(10), 1107; https://doi.org/10.3390/jmse9101107
Received: 10 September 2021 / Revised: 5 October 2021 / Accepted: 7 October 2021 / Published: 12 October 2021
A method for the morphing of surface/volume meshes suitable to be used in hydrodynamic shape optimization is proposed. Built in the OpenFOAM environment, it relies on a Laplace equation that propagates the modifications of the surface boundaries, realized by applying a free-form deformation to a subdivision surface description of the geometry, into the computational volume mesh initially built through a combination of BlockMesh with cfMesh. The feasibility and robustness of this mesh morphing technique, used as a computationally efficient pre-processing tool, is demonstrated in the case of the resistance minimization of the DTC hull. All the hull variations generated within a relatively large design space are efficiently and successfully realized, i.e., without mesh inconsistencies and quality issues, only by deforming the initial mesh of the reference geometry. Coupled with a surrogate model approach, a significant reduction in the calm water resistance, in the extent of 10%, has been achieved in a reasonable computational time. View Full-Text
Keywords: mesh morphing; free-form deformation; subdivision surfaces; optimization; design by optimization; CFD; RANS mesh morphing; free-form deformation; subdivision surfaces; optimization; design by optimization; CFD; RANS
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MDPI and ACS Style

Villa, D.; Furcas, F.; Pralits, J.O.; Vernengo, G.; Gaggero, S. An Effective Mesh Deformation Approach for Hull Shape Design by Optimization. J. Mar. Sci. Eng. 2021, 9, 1107. https://doi.org/10.3390/jmse9101107

AMA Style

Villa D, Furcas F, Pralits JO, Vernengo G, Gaggero S. An Effective Mesh Deformation Approach for Hull Shape Design by Optimization. Journal of Marine Science and Engineering. 2021; 9(10):1107. https://doi.org/10.3390/jmse9101107

Chicago/Turabian Style

Villa, Diego, Francesco Furcas, Jan O. Pralits, Giuliano Vernengo, and Stefano Gaggero. 2021. "An Effective Mesh Deformation Approach for Hull Shape Design by Optimization" Journal of Marine Science and Engineering 9, no. 10: 1107. https://doi.org/10.3390/jmse9101107

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