Application of mesh deformation and adaptive method in hullform design optimization

Autor: Ni Qijun, Feng Zhu, Li Shengzhong, Hou Xiaojun
Rok vydání: 2021
Předmět:
Zdroj: Journal of Marine Science and Technology. 27:566-575
ISSN: 1437-8213
0948-4280
DOI: 10.1007/s00773-021-00851-9
Popis: The hull geometry deformation method is coupled with numerical computation mesh to deform and reconstruct ship hull surface mesh in a direct way. Meanwhile, numerical computation mesh can adapt with deformation of hull surface mesh, and thereby a numerical method for computing mesh deformation and adaptation is obtained based on FFD (free-form deformation). This has solved such potential problems as mesh auto-regeneration caused by hull grand deformation in the optimization design, and consequently provided potential ways for hullform innovation. In this paper, we elaborate in detail the hullform mesh deformation and volume mesh adaptive technique and their realization. We take a 3000t survey vessel for hullform design optimization using SBD (simulation-based design) technique, and aim for its resistance reduction. An innovative bulbous bow plus vertical bow form is obtained to replace the conventional bulbous bow. Model experiments are conducted in a towing tank to validate the innovative configuration. The experimental validation shows a remarkable resistance reduction, with the total resistance coefficient of the optimized case at design speed 14.5kn decreasing by 10.8% compared with the original case. The proposed method has provided a new way for hullform configuration design.
Databáze: OpenAIRE
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