Abstract

This chapter discusses the new software for numerical simulation of transient three-dimensional chemically reactive fluid flows with sprays is presented. It uses unstructured hexahedral grids. It has been optimized for super-scalar machine and has been parallelized based on OPEN-MP paradigm. This software, named KIFP, uses finite volume methodology on staggered grids, time splitting technique, SIMPLE loop and sub-cycled advection for solving the RANS equations. These methods are widely used for combustion stroke calculations in engines and have demonstrated their robustness and efficiency. Few examples of the capabilities of the code are shown. Speed-ups are given for a spray case and a combustion case. Turbulent combustion is modeled via the ECFM model developed at IFP. Finally, a full calculation with compression, spray injection and combustion in a gasoline direct injection engine is presented. KIFP solves the full Reynolds Averaged Navier-Stokes equations for multi-species flows with spray and turbulent combustion using the well known time-splitting decomposition.

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