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    Investigation of normal force and moment coefficients for an AUV at nonlinear angle of attack and sideslip range

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    IEEE_J_Ocean_Eng_33_538.pdf (1.555Mb)
    Date
    2008
    Author
    Barros, E.A. de
    Dantas, J.L.D.
    Pascoal, A.M.
    Desa, E.S.
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    Abstract
    This paper presents a comparative study of computational fluid dynamics (CFD) and analytical and semiempirical (ASE) methods applied to the prediction of the normal force and moment coefficients of an autonomous underwater vehicle (AUV). Both methods are applied to the bare hull of the vehicle and to the body–hydroplane combination. The results are validated through experiments in a towing tank. It is shown that the CFD approach allows for a good prediction of the coefficients over the range of angles of attack considered. In contrast with the traditional ASE formulations used in naval and aircraft fields, an improved methodology is introduced that takes advantage of the qualitative information obtained from CFD flow visualizations
    URI
    http://drs.nio.org/drs/handle/2264/3621
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