Computational ice shapes were generated on the boundary layer ingesting engine nacelle of the D8 Double Bubble aircraft. The computations were generated using LEWICE3D, a well-known CFD icing post processor. A 50-bin global drop diameter discretization was used to capture the collection efficiency due to the direct impingement of water onto the engine nacelle. These discrete results were superposed in a weighted fashion to generate six drop size distributions that span the Appendix C and O regimes. Due to the presence of upstream geometries, i.e. the fuselage nose, the trajectories of the water drops are highly complex. Since the ice shapes are significantly correlated with the collection efficiency, the upstream fuselage nose has a significant impact on the ice accretion on the engine nacelle. These complex trajectories are caused by the ballistic nature of the particles and are thus exacerbated as particle size increases. Shadowzones are generated on the engine nacelle, and due to the curvature of the nose of the aircraft the shadowzone boundary moves from lower inboard to upper outboard as particle size increases. The largest particle impinging one the engine nacelle from the 50-bin discretization was the 47 μm drop diameter. As a result, the MVD greater than 40 μm Appendix O conditions were characterized by extremely low collection efficiency on the engine nacelle for these direct impingement simulations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Predicted Ice Shape Formations on a Boundary Layer Ingesting Engine Inlet


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference on Icing of Aircraft, Engines, and Structures ; 2019



    Publication date :

    2019-06-10




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Predicted Ice Shape Formations on a Boundary Layer Ingesting Engine Inlet

    Porter, Christopher | British Library Conference Proceedings | 2019


    Boundary-Layer-Ingesting Inlet Flow Control

    Owens, L.R. | Online Contents | 2008


    Boundary-Layer-Ingesting Inlet Flow Control

    Owens, Lewis / Allan, Brian / Gorton, Susan | AIAA | 2006


    Fan Response to Boundary-Layer Ingesting Inlet Distortions

    Giuliani, James E. / Chen, Jen-Ping | AIAA | 2016


    Fan Response to Boundary-Layer Ingesting Inlet Distortions

    Giuliani, James E | Online Contents | 2016