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.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

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


    Weitere Titelangaben:

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


    Beteiligte:
    Mishima, S. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1996


    Format / Umfang :

    11 Seiten, 24 Bilder, 27 Quellen


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch







    HYDROFOIL CAVITATING FLOW CONTROL STRUCTURE

    QIAN ZHONGDONG / ZHANG SHAOFENG / XUE LONGJIAN et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    A Numerical Model of Cavitating Flow Around Hydrofoil (abstract)

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