CONCLUSION
 

    In the first time this study permitted us to use STAR-CD and to lear about combustion mechanism. STAR-CD is composed of three modules ; pre, post processing and CFD analysis. The pre-processing is not a a very performing module, so it is difficult to create complex geometries. That 's why we trayed to import complexe geometry from Gambit, where it is more easily to create difficult modeles.

    Comparison between the two simulations (PPDF, THREE-STEP EDBR) give the same results for the two differents combustion model's.

    Finally, we can't solve all difficulties to run a premixed combustion models with Star-CD because a lot of parameters have to be adjusted and this necessitate time. In fact, no resultes were obtaned by engine combustion computations.