NUMERICAL COMPUTATION OF VISCOUS DRAG FOR AXISYMMETRIC UNDERWATER VEHICLES
Keywords:
Axisymmetric body of revolution, underwater vehicle, viscous drag, CFD, turbulence modelAbstract
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
Patel, V.C. and Chen, H.C., 1986. Flow over tail and in wake of axisymmetric bodies: review of the state of the art, Journal of Ship Research, Vol. 30, No. 3, 202-314.
Choi, S.K. and Chen, C.J., 1990. Laminar and turbulent flows past two dimensional and axisymmetric bodies, Iowa Institute of Hydraulic Research, IIHR Report 334-II.
Sarkar, T., Sayer, P.G. and Fraser, S.M., 1997. A study of autonomous underwater vehicle hull forms using computational fluid dynamics, International Journal for Numerical Methods in Fluids, Vol. 25, 1301-1313.
Lam, C.K.G. and Bremhorst, K., 1981. A modified form of the k-e model for predicting wall turbulence, ASME Journal Fluid Engineering, Vol.103, 456.
Baker, C., 2004. Estimating drag forces on submarine hulls, Report DRDC Atlantic CR 2004-125, Defence R&D Canada – Atlantic.
Gertler, M., 1950. Resistance experiments on a systematic series of streamlined bodies of revolution for application to the design of high speed submarines, DTMB Report C-297.
Menter, F.R., 1994. Two-equation eddy-viscosity turbulence models for engineering applications, AIAA Journal, 32(8):1598-1605.
Schlichting, H., 1966. Boundary Layer Theory, McGraw-Hill, New York.
Versteeg, H.K. and Malalasekera, W., 1995. An Introduction to
Computational Fluid Dynamics the Finite Volume Method, Longman Scientific and Technical, U.K.
Cebeci, T., Shao, J.R., Kafyeke, F. and Laurendeau, E., 2005. Computational Fluid Dynamics for Engineers, Horizons Publishing Inc., Long Beach, California.
Baldwin, B.S. and Lomax, H., 1978. Thin layer approximation and algebraic model for separated turbulent flows, AIAA 16th Aerospace Sciences Meeting.
White, N.M., 1977. A comparison between a simple drag formula and experimental drag data for bodies of revolution, DTNSRDC Report 77-0028.
White, N.M., 1978. A comparison between the drags predicted by boundary layer theory and experimental drag data for bodies of revolution, DTNSRDC SPD-784-01
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