A numerical nonlinear optimization technique is applied to the systematic design of two-dimensional partially or supercavitating hydrofoil sections. The design objective is to minimize the hydrofoil drag for given lift and cavitation number. The hydrodynamic analysis of the cavitating hydrofoil is performed in nonlinear theory, via a low-order potential-based panel method. The effects of viscosity are taken into account via a uniform friction coefficient applied on the wetted foil surface. The total drag, lift,cavitation number, and other quantities involved in the imposed constraints, are expressed in terms of quadratic functions of the main parameters of the hydrofoil geometry, angle of attack, and the cavity length. The optimization is based on the method of multipliers by coupling the Lagrange multiplier terms and the penalty function terms. The robustness and convergence of the are extensively investigated, and the results are compared withthose from applying other design methods.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    A numerical optimization technique applied to the design of two-dimensional cavitating hydrofoil sections


    Additional title:

    Eine numerische Optimierungstechnik, angewendet auf den Entwurf von zweidimensionalen kavitierenden Tragflaechenprofilen


    Contributors:
    Mishima, S. (author)

    Published in:

    Publication date :

    1996


    Size :

    11 Seiten, 24 Bilder, 27 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English







    HYDROFOIL CAVITATING FLOW CONTROL STRUCTURE

    QIAN ZHONGDONG / ZHANG SHAOFENG / XUE LONGJIAN et al. | European Patent Office | 2023

    Free access

    A Numerical Model of Cavitating Flow Around Hydrofoil (abstract)

    Chachko, A. V. / Krylov Shipbuilding Research Institute | British Library Conference Proceedings | 2003