For most ships, frictional resistance is the major component of their calm water resistance. Wave resistance exceeds the frictional component only at Froude numbers above 0.3. The frictional resistance of ships results from their turbulent boundary layers, which are the topic of ongoing research efforts all over the world. This chapter provides only a short summary of turbulent boundary layer features. In contrast to viscous laminar flow, turbulent boundary layers feature two mechanisms for shear stress generation. They share the viscosity driven shear stress with laminar boundary layers, but also generate shear stress by dissipation of energy through turbulent eddies. Using Reynolds' decomposition of the flow speed, wall shear stress may be expressed as a sum of viscous and turbulent shear stress. William Froude's successful method of predicting full scale resistance from model tests requires an accurate method to calculate the frictional resistance for model and full scale vessel.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Frictional Resistance


    Beteiligte:
    Birk, Lothar (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    06.05.2019


    Format / Umfang :

    19 pages




    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Frictional resistance

    Engineering Index Backfile | 1913


    Frictional resistance

    Eisner, F. | Engineering Index Backfile | 1932


    Frictional resistance

    Eisner, F. | Engineering Index Backfile | 1932



    Frictional resistance and train resistance

    Wellington, A.M. | Engineering Index Backfile | 1885