To understand the working mechanism of the porous medium (PM) internal combustion engine, effects of a porous medium heat regenerator inserted into a combustion chamber on the turbulent flow field and fuel-air mixture formation are studied by numerical simulation. The cylindrical chamber has a constant volume, in which a disk-shaped PM insert is fixed. A simplified model for the random structure of the PM is presented, in which the PM is represented by an assembly of a great number of randomly distributed solid units. To simulate flows in the PM a Brinkman-Forchheimer-extended Darcy's equation is introduced into the numerical solver. A version of two-equation k - ε turbulence model suggested by Antohe and Lage is employed for the turbulence prediction in the PM. A spray model, in which the effects of drop breakup, collision and coalescence are taken into account, is introduced to describe spray/wall interactions. Numerical computations are performed for the turbulent flows induced by a fuel spray outside and inside of the PM with different structures. Calculation results show that the spray/PM interaction has substantial and positive influences on the fuel-air mixture formation and homogenization in the combustion chamber, which could be very advantageous in engine applications.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical Study on Turbulent Two-Phase Flow in a Porous Media Combustion Chamber


    Additional title:

    Sae Technical Papers


    Contributors:
    Liu, Hong (author) / Xie, Maozhao (author) / Dong, Ming (author)

    Conference:

    2008 SAE International Powertrains, Fuels and Lubricants Congress ; 2008



    Publication date :

    2008-06-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Numerical study on turbulent two-phase flow in a porous media combustion chamber

    Dong,M. / Xie,M. / Liu,H. et al. | Automotive engineering | 2008


    Numerical Study on Turbulent Two-Phase Flow in a Porous Media Combustion Chamber

    Dong, M. / Xie, M. / Liu, H. et al. | British Library Conference Proceedings | 2008


    Numerical Simulations of Turbulent Flow over Porous Media

    Moessner, Michael / Radespiel, Rolf | AIAA | 2013



    Numerical Simulation of Turbulent Reacting Flow in a Combustion Chamber Using Detailed Chemical Kinetics

    Darbandi, M. / Ghafourizadeh, M. / Schneider, G. et al. | British Library Conference Proceedings | 2013