This paper discusses the effect of modifying the hangar shape on the dynamic interaction of ship airwake and rotor downwash of the helicopter using computational fluid dynamics (CFD). A traditional 1:100 scaled simplified frigate ship (SFS-2) is modified to obtain trapezoidal and rectangular configurations of the hangar. The coupled interaction of ship airwake formed behind the ship subjected to free stream velocity of 6 m/s with the downwash generated by helicopter rotor hovering at 5000 rpm is simulated using STARCCM + CFD solver. The Reynolds-averaged Navier–Stokes equation is solved with conventionalk-ω two-equation turbulence model to simulate the flow. The helicopter rotor thrust coefficient on hovering plane and landing plane is calculated for all the three SFS-2 configurations. The resultant velocity flow field of the ship airwake and rotor downwash is surveyed to compare the turbulence intensities at four equidistant lateral planes along the flight deck for a zero wind-over-deck (WOD) angle. The modified hangar configurations are shown to improve the coupled flow aft of the hangar.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    CFD Study of Coupled Flow due to Frigate Airwake and Helicopter Rotor Downwash on Flight Deck


    Weitere Titelangaben:

    Lecture Notes in Civil Engineering


    Beteiligte:
    Sundar, Vallam (Herausgeber:in) / Sannasiraj, S. A. (Herausgeber:in) / Sriram, V. (Herausgeber:in) / Nowbuth, Manta Devi (Herausgeber:in) / Kumar, Sumit (Autor:in) / Vijayakumar, R. (Autor:in)


    Erscheinungsdatum :

    2020-11-09


    Format / Umfang :

    17 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Helicopter Downwash/Frigate Airwake Interaction Flowfield PIV Surveys in a Low Speed Wind Tunnel

    Nackali, Y. / AHS International | British Library Conference Proceedings | 2011


    Coupled Experimental and Offline Simulation Study of a Helicopter Rotor in a Frigate Airwake with Active Flow Control

    Derhille, E. / Gallas, Q. / Bordier, L. et al. | British Library Conference Proceedings | 2023


    ON MODELING AND SIMULATION OF AIRWAKE AND AIRWAKE-DOWNWASH TURBULENCE FOR HELICOPTER SHIPBOARD OPERATIONS

    Gaonkar, G.H. / American Helicopter Society | British Library Conference Proceedings | 2013


    Study of Frigate Airwake effects on helicopter recovery maneuvers by PIV measurements.

    Bardera, Rafael / Rodriguez-Sevillano, Ángel / Matias-Garcia, Juan Carlos et al. | AIAA | 2023


    Study of Frigate Airwake Effects on Helicopter Recovery Maneuvers by PIV Measurements

    Bardera, Rafael / Rodriguez-Sevillano, Ángel / Matias-Garcia, Juan Carlos et al. | TIBKAT | 2023