Different models have been proposed in the literature in order to simulate by Computational Fluid Dynamics (CFD) liquid films generated by spray impingement on vehicle surfaces. Generally, the discrete phase film model introduced by O'Rourke and Amsden (1996) and adapted by Kruse and Chen (2007) or the continuous phase film model as proposed by Anderson and Coughlan (2006) are applied when simulating vehicle soiling by CFD. Although several specific adaptations have been reported to increase model relevance and generality, it is still very difficult to capture all physical details of film flow dynamics, especially concerning the film break-up physics and the occurrence of splashing. The continuous phase film model approach of Anderson and Coughlan (2006), which is in the focus of the present paper, has been therefore improved with both objectives in mind. The modified model accounts for splashing of impacting droplets based on experimental results of Mundo, Sommerfeld and Tropea (1995), as well as for film break-up based on an adapted Weber number criterion. Test simulations have been performed on a simplified wind shield geometry. CFD predictions are compared with results from experimental investigations relying on Phase Doppler Anemometry (PDA) and Shadowgraphy measurements in a two-phase wind tunnel.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Improved Eulerian model for liquid films


    Contributors:


    Publication date :

    2010


    Size :

    9 Seiten, 10 Bilder, 2 Tabellen, 15 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




    Eulerian Model Predicting the Behaviour of Liquid Sprays

    Federation Internationale des Societes d'Ingenieurs des Techniques de l'Automobile | British Library Conference Proceedings | 2002


    Eulerian model predicting the behavior of liquid sprays

    Divis,M. / Macek,J. / Czech Technical Univ.in Prague,CZ | Automotive engineering | 2002


    Improved Eulerian/Lagrangian Modeling of Liquid Jet Injection into a Supersonic Crossflow

    Guerra, Joel T. / Edwards, Jack R. / Lin, Kuo-Cheng | TIBKAT | 2022


    Improved Eulerian/Lagrangian Modeling of Liquid Jet Injection into a Supersonic Crossflow

    Guerra, Joel T. / Edwards, Jack R. / Lin, Kuo-Cheng | AIAA | 2022