Caudal fin has fascinated researchers for decades for their great role in fish swimming, and researchers have developed lots of designs of caudal fin to achieve high efficiency and speed propulsion. This paper presents a novel design of variable area caudal fin. A “window” which can rotate freely is designed in the middle of the fin and it can be opened by the fluid force and closed by a simple mechanism. By closing or opening the “window”, the caudal fin can vary its area dynamically in the out-stroke and in-stroke in its motion. Four modes to control the “window” in the pitching motion is then presented, their hydrodynamic forces including thrust force, lateral force and lift force are studied. It is found out that the variable area fin model can indeed improve the propulsion performance compared with the traditional fin, and the mode of closing the “window” in the out-stroke and opening the “window” in the in-stroke can generate the largest thrust force for our model than the other modes. Moreover, experiments about various kinematic parameters with different modes are conducted, it is found out different modes behave quite different with same pitching frequency and amplitude, and its propulsive performance is highly depend on the kinematic parameters. The variable area caudal fin model casts an inspiration for the novel design of underwater propulsive mechanism and the results will be useful for the propulsion study of underwater bio-mimetic vehicles.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experimental Research on a Novel Design of Variable Area Caudal Fin


    Beteiligte:
    Liu, Bo (Autor:in) / Wang, Lei (Autor:in) / Chen, Bu-Yao (Autor:in) / Qin, Feng-Hua (Autor:in) / Zhang, Shi-Wu (Autor:in)


    Erscheinungsdatum :

    2013


    Format / Umfang :

    7 Seiten




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Propelling objects using a caudal cycle

    DAVID HORRIGAN | Europäisches Patentamt | 2019

    Freier Zugriff

    PROPELLING OBJECTS USING A CAUDAL CYCLE

    HORRIGAN DAVID JOHN | Europäisches Patentamt | 2016

    Freier Zugriff

    Automobile seat caudal vertebra supporting structure

    XIN YI / LI WEI / TANG JIE et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Propelling objects using a caudal cycle

    HORRIGAN DAVID JOHN | Europäisches Patentamt | 2020

    Freier Zugriff