Multi-body layout optimization of an unmanned quadramaran

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  •  (a. Marine Engineering College;b. National Key Laboratory of Waterway Traffic Control;c. Dalian Key Laboratory of Intelligent Ship Green Power Control and Testing, Dalian Maritime University, Dalian 116026, China)

Online published: 2024-12-24

Abstract

To address the issue that navigational drag performance of an unmanned quadramaran is affected by both longitudinal and lateral separations of multi-bodies, the entire layout of an self-designed unmanned quadramaran is optimized by comprehensively comparing drag coefficients of various schemes under different navigation conditions. Firstly, a variety of layout schemes are constructed to compare and analyze calm-water resistance coefficients under three different speed conditions by using computational fluid dynamics numerical simulation methods and Fluent solver. Secondly, a comprehensive resistance coefficient evaluation function is designed to optimize the layout scheme considering resistance performance. Finally, the improvement effect of layout optimization on the overall navigation performance is further verified by comparing the wave height and surface pressure before and after optimization. Simulation results show that the longitudinal distance is the main factor affecting the overall navigation resistance of quadramaran, while the optimized layout of multi-bodies reduces the comprehensive resistance coefficient by 12.9% compared to that before optimization, thereby effectively reducing wave height and surface pressure of the unmanned quadramaran during navigation.

Cite this article

WANG Ning, SONG Jialin, YANG Qilin . Multi-body layout optimization of an unmanned quadramaran[J]. Journal of Dalian Maritime University, 2024 , 50(4) : 1 -11 . DOI: 10.16411/j.cnki.issn1006-7736.2024.04.001

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