We have developed a methodology for predicting combustion and emissions in a Homogeneous Charge Compression Ignition (HCCI) Engine. The methodology judiciously uses a fluid mechanics code followed by a chemical kinetics code to achieve great reduction in the computational requirements; to a level that can be handled with current computers. In previous papers, our sequential, multi-zone methodology has been applied to HCCI combustion of short-chain hydrocarbons (natural gas and propane). Applying the same procedure to long-chain hydrocarbons (iso-octane) results in unacceptably long computational time. In this paper, we show how the computational time can be made acceptable by developing a segregated solver. This reduces the run time of a ten-zone problem by an order of magnitude and thus makes it much more practical to make combustion studies of long-chain hydrocarbons.This sequential, multi-zone methodology is here applied to analyze recent experimental results for combustion of iso-octane in an HCCI engine. The numerical results agree well with the experimental results for all the combustion parameters, and the model also makes reasonable predictions for hydrocarbon and carbon monoxide emissions. The paper also includes a sensitivity analysis on how the resolution of the grid used in the fluid mechanics code affects the results of the HCCI combustion analysis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Decoupled Model of Detailed Fluid Mechanics Followed by Detailed Chemical Kinetics for Prediction of Iso-Octane HCCI Combustion


    Additional title:

    Sae Technical Papers



    Conference:

    SAE 2002 World Congress & Exhibition ; 2002



    Publication date :

    2001-09-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Detailed Chemical Kinetic Modeling of Iso-octane SI-HCCI Transition

    Daw, C. Stuart / Finney, Charles E. A. / Edwards, K. Dean et al. | SAE Technical Papers | 2010


    Modeling and Experiments of HCCI Engine Combustion Using Detailed Chemical Kinetics with Multidimensional CFD

    Marriott, Craig D. / Christensen, Magnus / Reitz, Rolf D. et al. | SAE Technical Papers | 2001


    Modeling and experiments of HCCI engine combustion using detailed chemical kinetics with multidimensional CFD

    Kong,S.C. / Marriott,C.D. / Reitz,R.D. et al. | Automotive engineering | 2001


    Detailed Kinetic Modeling of HCCI Combustion with Isopentanol

    Dec, John E. / Tsujimura, Taku / Pitz, William J. et al. | SAE Technical Papers | 2011