This paper investigates the influence of the propeller race on upstream and downstream self-propelled AUVs. Initially simulations of a self-propelled hull are performed at the Reynolds Number 3.2×106 with the commercial RANS code ANSYS CFX 12.1, utilising a body force model to replicate the impact of the propeller utilising momentum source terms. This is then extended to consider a fleet of two self-propelled vehicles operating at a range of longitudinal offset and transverse separations. The results highlight that operation in close proximity to another self-propelled vessel has a significant impact of both the flow around the hull and drag experienced by the vehicle. A propeller race deduction is proposed to account for the increase in vehicle drag due to the propulsors of other vehicles. The propeller race deduction is dependent upon both longitudinal and transverse separation. From a vehicle or mission design perspective, it is important to correctly understand the true propulsive energy budget of the vehicle and its impact on both range and endurance. This study highlights the importance of considering both thrust deduction and any propeller race deductions when calculating the propulsive power consumption of an individual or fleet of vehicles.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical investigation of a pair of self-propelled AUVs operating in tandem



    Published in:

    Ocean Engineering ; 100 ; 126-137


    Publication date :

    2015


    Size :

    12 Seiten, 49 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    SELF-PROPELLED TANDEM AXLE TRAILER

    BEILER AARON JAY / FISHER WILLIAM / BEILER RAYMOND et al. | European Patent Office | 2021

    Free access

    Self-propelled tandem axle trailer

    BEILER AARON JAY / FISHER WILLIAM / BEILER RAYMOND et al. | European Patent Office | 2023

    Free access

    SELF-PROPELLED TANDEM AXLE TRAILER

    BEILER AARON JAY / FISHER WILLIAM / BEILER RAYMOND et al. | European Patent Office | 2022

    Free access

    SELF-PROPELLED TANDEM AXLE TRAILER

    BEILER AARON / FISHER WILLIAM / BEILER RAYMOND et al. | European Patent Office | 2022

    Free access

    SELF-PROPELLED TANDEM AXLE TRAILER

    BEILER AARON JAY / FISHER WILLIAM / BEILER RAYMOND et al. | European Patent Office | 2021

    Free access