A numerical study which compares between the diffusion limit (DL) and the well mixed (WM) droplet heating models under diesel combustion conditions is presented. The CFD code KIVA-II is used to perform the computations. Predictions are compared with available experimental data in n-decane and n-heptane sprays. For the n-decane spray measured gas temperatures support employing the DL-model, and as compared with the DL-model the WM-model clearly yields underpredicted vapor concentrations. In the n-heptane spray vapor concentration predictions show a strong independency of the employed heating model, and generally are in a good agreement with the measurements. Based on this independency, in subsequent comparisons between the two models under different spray operating conditions only the fuel with the lower volatility (n-decane) is considered.


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    Title :

    Comparison Between Two Droplet Heating Models Under Diesel Spray-Like Conditions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Comparison between two droplet heating models under diesel spray-like conditions

    Al Omari,S.A. / United Arab Emirates Univ.,SA | Automotive engineering | 2003


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