This work presents a liquid-vapor phase equilibrium study to assist the assessment of the performance of laser-induced fluorescence (LIF) of ketonic dopants added to non-fluorescing fuels. The evaporative characteristics and relative concentrations of individual species of the mixture including air were evaluated by a PSRK (Predictive Soave-Redlich-Kwong) equation of state approach. It was found important to extend the evaluations beyond the typical binary mixtures computations to faithfully represent the evaporation of tracers in the presence of air. Although the interaction parameter of O2-CH3CO in the functional group of UNIFAC for vapor-liquid phase equilibrium is not available, modeling was completed using the average value of O2-H2O and O2-CH3 groups. In comparison with experimental results of various mixture systems, the predicting capability of PSRK has been validated. Concentrations of individual components in both phases were determined using flash calculation, which also provided the amount of liquid that existed at equilibrium. Two tracers, 3-pentanone and 2-hexanone, were examined for their evaporation behaviors in iso-octane. The effect of gas solubility on liquid phase tracer concentrations and possible oxygen quenching of the LIF signals are discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Mixture Evaporative Characteristics Prediction for LIF Measurements Using PSRK (Predictive Soave-Redlich-Kwong) Equation of State


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE Powertrain & Fluid Systems Conference & Exhibition ; 2002



    Publication date :

    2002-10-21




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English