Calculation of three-dimensional turbulent flow around ship13; structures

Majumdar, Sekhar and Zhu, J and Rodi, W (1990) Calculation of three-dimensional turbulent flow around ship13; structures. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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    Abstract

    This report presents calculation of three-dimensional13; turbulent viscous flow over a HSVA tanker with a rounded nose at the bow end, a long constant rectangular cross section at the middle and finally ending in a sharp13; tapered stern section with comptex hub geometry to provide the propeller. The calculation however does not account for the effect of surfact waves or propellers on the flow. A hybrid procedure coupling the algebraic and the differential method of grid-generation is used to generate the body fitted c-o type of grid configuration around the ship.A finite volume method based on cell centered variabie arrangement and Cartesian velocity components coupled with standard k- E model for turbulence is then employed to calculate the time-averaged, three-dimensional flow field. The computer code and the relevant data structure are so organised that most of the code except the implicit linear solver used is fully vectorisable, so as to exploit the potential of modern vector computers. Comparison of calculation results with available measurement data shows reasonable agreement for the overall flow characteristics like distribution of pressure or skin-friction coefficient around the ship.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Finite volume methods;Body-fitted grids;3D Incompressible flow;Flow around ship Hulls
    Subjects: MATHEMATICAL AND COMPUTER SCIENCES > Mathematical and Computer Scienes(General)
    AERONAUTICS > Aircraft Design, Testing & Performance
    Division/Department: Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division
    Depositing User: Mrs Neetu Chandra
    Date Deposited: 03 Jul 2006
    Last Modified: 24 May 2010 09:44
    URI: http://nal-ir.nal.res.in/id/eprint/1917

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