Automatic design optimization of SWATH applying CFD and RSM model. (15th January 2019)

• Record Type: Journal Article
• Authors: Lin, Yan; Yang, Qu; Guan, Guan
• Is Part Of: Ocean engineering. Volume 172(2019)
• Page Start: 146
• Page End: 154
• Publication Date: 2019-01-15
• Subjects: SWATH -- Design optimization -- Numerical simulation -- RSM -- MIGA; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2018.11.044
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: This study sets up an automatic design optimization procedure for SWATH, which integrates computational fluid dynamics (CFD) analysis, geometrical modification and optimization algorithm. A high-fidelity CFD solver based on Reynolds Averaged Navier-Stokes (RANS) equations which has been proved giving accurate flow prediction, is integrated into the optimization module. The Response Surface Model (RSM) is built as a surrogate for computationally expensive numerical simulations to improve the efficiency of the optimization. The Multi-island Genetic Algorithm (MIGA) is applied to the optimization. A 2.7m SWATH test model has been taken as a verification model. The optimization result shows the effectiveness of the optimization and the advantage of the achieving hull forms that have lower resistance than the original hull.