Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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MOTION DESIGN OPTIMIZATION OF AUV DOUBLE HYDROFOIL FOR IMPROVEMENT OF THRUST AND EFFICIENCY

추력과 효율 향상을 위한 AUV Double Hydrofoil의 모션 최적설계

  • So, H.K. (Dept. of Mechanical Design Engineering, Hanyang Univ.) ;
  • Jo, T.H. (Dept. of Mechanical Design Engineering, Hanyang Univ.) ;
  • Lee, Y.H. (Dept. of Mechanical Design Engineering, Hanyang Univ.) ;
  • Kim, J.S. (Dept. of Mechanical Design Engineering, Hanyang Univ.) ;
  • Han, J.H. (Dept. of Mechanical Engineering, Hanyang Univ.) ;
  • Koo, B.C. (Dept. of Mechanical Engineering, Hanyang Univ.) ;
  • Lee, D.H. (Dept. of Mechanical Design Engineering, Hanyang Univ.)
  • 소현규 (한양대학교 기계설계공학과) ;
  • 조태현 (한양대학교 기계설계공학과) ;
  • 이용한 (한양대학교 기계설계공학과) ;
  • 김진산 (한양대학교 기계설계공학과) ;
  • 한준희 (한양대학교 기계공학과) ;
  • 구본찬 (한양대학교 기계공학과) ;
  • 이도형 (한양대학교 기계설계공학과)
  • Received : 2016.02.26
  • Accepted : 2016.03.22
  • Published : 2016.03.31
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Abstract

While most AUV researches have concerned about single hydrofoil, practical AUV's are generally operated with multiple hydrofoils. Double hydrofoil study attempts to evaluate thrust and efficiency with various flapping motions, and carries out design optimization using parametric analysis. Flow patterns such as vortex shedding and wake-body interaction are carefully investigated during design variable sensitivity analysis. The purpose of this design optimization is to find out the optimal motion that yields maximum thrust and efficiency. The design optimization employes several techniques such as table of orthogonal arrays, Kriging method, ANOVA analysis and MGA. Throughout this research, it is possible to find the optimal values of heaving ratio, heaving shift and pitch shift: Heaving ratio 0.950, heaving shift $23.120^{\circ}$ and pitch shift $89.991^{\circ}$ are found to be optimal values in double hydrofoil motions. Thrust and efficiency are 16.7% and 35.1% higher than existing AUV that did not consider nonlinear dependency of motion parameters. This results may offer an effective framework that is applicable to various AUV motion analyses and designs.

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References

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