The advanced development and optimization of fuel atomization in port and direct injection systems for automobile engine is desired for the improvement of fuel combustion performance and thermal efficiency of the engine. Computational prediction and design of injector nozzle spray flow is an effective method for that. However, a practical simulation method of the continuous primary, secondary spray breakups and the spraying behavior have not been developed yet. In this study, we have developed the integrated computational method of the total fuel atomization process of the injector nozzle. This new computational approach is taking into account the nozzle internal flow to form the primary breakup using Volume of Fluid (VOF) method in connection with the spray flow characteristics to the engine cylinder using Discrete Droplet Model (DDM). The flow field data of fuel velocity, turbulent energy and dissipation rate obtained by Eulerian approach (VOF) are transferred to Lagrangian process (DDM) as the initial numerical conditions of the droplet velocity, diameter and flow rate. For flow field data acquisition to transfer process (VOF to DDM), we have newly developed the coupler software named VOF-DDM Bridge Tool (VDBT). The presented numerical method is available to predict the fuel spray angle, the particle size distribution and the behavior of the spray penetration in total atomization and spray process. Furthermore, we confirmed that the obtained numerical results shows reasonably agreement with the optical spray measurement results.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Integrated Computational Study for Total Atomization Process of Primary Breakup to Spray Droplet Formation in Injector Nozzle


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Arioka, Akira (Autor:in) / Ishimoto, Jun (Autor:in) / Ochiai, Naoya (Autor:in) / Yamaguchi, Nobuhiko (Autor:in) / Furukawa, Nobuyuki (Autor:in) / Sasaki, Yuzuru (Autor:in)

    Kongress:

    SAE 2016 International Powertrains, Fuels & Lubricants Meeting ; 2016



    Erscheinungsdatum :

    17.10.2016




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Integrated Computational Study for Total Atomization Process of Primary Breakup to Spray Droplet Formation in Injector Nozzle

    Ochiai, Naoya / Ishimoto, Jun / Arioka, Akira et al. | British Library Conference Proceedings | 2016


    Pintle Injector Spray Atomization: Liquid Sheet Breakup Quantification

    Erazo, Santiago / Day, Joseph A. / Gamertsfelder, Jacob et al. | AIAA | 2021


    PINTLE INJECTOR SPRAY ATOMIZATION: LIQUID SHEET BREAKUP QUANTIFICATION

    Erazo, Santiago / Day, Joseph A. / Gamertsfelder, Jacob et al. | TIBKAT | 2021


    Fuel breakup and atomization in the near nozzle region of a GDI injector

    Wigley,G. / Goodwin,M.S. / Pitcher,G. et al. | Kraftfahrwesen | 2003


    Fuel Atomization and Droplet Breakup Models for Parallel Spray Combustion CFD Code

    Yang, S. / Le, J. / Zhongguo gong cheng re wu li xue hui et al. | British Library Conference Proceedings | 2006