NUMERICAL COMPUTATION OF VISCOUS DRAG FOR AXISYMMETRIC UNDERWATER VEHICLES

Authors

  • Md. Mashud Karim Department of Naval Architecture and Marine Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh
  • Md. Mahbubar Rahman Postgraduate Student, Department of Naval Architecture and Ocean Engineering, Osaka University, Japan
  • Md. Abdul Alim Dept. of Mathematics, Bangladesh University of Engineering and Technology, Dhaka-1000, Bangladesh

Keywords:

Axisymmetric body of revolution, underwater vehicle, viscous drag, CFD, turbulence model

Abstract

Simulation of flow past underwater vehicle hull form continues to grow rapidly in the field of marine hydrodynamics. With the advent of high speed computers, significant progress has been made in predicting flow characteristics around any given hull form. Although minimization of drag is one of the most important design criteria, not much effort has been given to determining viscous drag, an important parameter in the development of a new design. This paper presents finite volume method based on Reynolds-averaged Navier-Stokes (RANS) equations for computation of viscous drag. Computations are performed on bare submarine hull DREA and six axisymmetric bodies of revolution with a number of Length-Diameter (L/D) ratios ranging from 4 to 10. Shear Stress Transport (SST) k-ω model has been used to simulate turbulent flow past bodies. Finally, computed results are compared with experimental measurements and found satisfactory.

References

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Published

2018-04-09

How to Cite

Karim, M. M., Rahman, M. M., & Alim, M. A. (2018). NUMERICAL COMPUTATION OF VISCOUS DRAG FOR AXISYMMETRIC UNDERWATER VEHICLES. Jurnal Mekanikal, 26(2). Retrieved from https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/135

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