The air entrainment characteristics of a transient high-pressure diesel spray were investigated with respect to time and location for injection pressures (Pinj = 76 or 137 MPa) and ambient density (ρa = 15.6 kg/m3) under the non-evaporating condition (303 K). A particle image velocimetry analysis was introduced and some parameters were defined to express air entrainment characteristics. The air entrainment rate increased greatly as the flow moved downstream owing to a larger contact surface area and a recirculating flow. Higher pressure led to a greater entrainment rate with higher effectiveness. The speed (spray tip and front ambient gas) and volume (spray and laterally entrained gas) relations suggested the possibility for the renewal against the lateral-dominant entrainment mechanism.


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    Titel :

    Estimation of the air entrainment characteristics of a transient high-pressure diesel spray


    Beteiligte:
    Choi, W (Autor:in) / Choi, B-C (Autor:in)


    Erscheinungsdatum :

    01.08.2005


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Estimation of the air entrainment characteristics of a transient high-pressure diesel spray

    Choi,W. / Choi,B.C. / Korea Advanced Inst.of Science and Technol.,KR et al. | Kraftfahrwesen | 2005


    Air Entrainment in a High Pressure Diesel Spray

    Kozma, Jodi Hansen / Farrell, P. V. | SAE Technical Papers | 1997


    Air entrainment in a high pressure diesel spray

    Kozma,J.H. / Farrell,P.V. / Univ.of Wisconsin-Madison,US | Kraftfahrwesen | 1997


    Characteristics of Air-entrainment in a Diesel Spray

    Zhang, Long / Ishikawa, Naoya | SAE Technical Papers | 1999