Original scientific paper
https://doi.org/10.21278/brod75301
Hydrodynamic shape optimization of an autonomous and remotely-operated vehicle via a multi-surrogate model
Jian Liu
; State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
*
Shanghua Wu
; School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
Xiufeng Yue
; School of Economics and Management, Dalian University of Technology, Dalian 116024, China
Qianjin Yue
; State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
* Corresponding author.
Abstract
The design requirements for the hydrodynamic performance of underwater vehicles vary significantly depending on the application. Optimization without an initial model results in challenges such as large design domains, nonlinear complexity, and high data requirements. To optimize the hydrodynamic performance during the design process, in this paper, a multi-surrogate model was employed to progressively design the shape of an autonomous and remotely-operated vehicle. Based on the data characteristics of different stages, this approach strikes a balance among data quantity, prediction accuracy, and multi-objective requirements. An artificial neural network prediction surrogate model was constructed based on the principle of the minimum prediction factor using the optimal Latin hypercube sampling method. During the optimization of the design domain, the optimum objective was to minimize the dimensionless force (G(x)). During the multi-objective optimization stage, a regression kriging surrogate model was constructed based on a support vector product. The optimization objectives were to maximize volume and minimize dimensionless forces. This enabled the overall design process to attain optimal Pareto solutions within the design domain while simultaneously ensuring high prediction accuracy and minimum data requirements. The results obtained are consistent with the simulation comparison, thus verifying the reliability of the entire optimization process.
Keywords
Multi-surrogate model; hydrodynamic optimization; autonomous and remotely-operated vehicle; multi-objective optimization
Hrčak ID:
319371
URI
Publication date:
1.7.2024.
Visits: 193 *