Multi-dimensional computation of compressible reacting flows throughporous media to apply to Internal Combustion Engine simulation

摘要

In this work, a new multi-dimensional Finite Volume (FV) solver of partial differentialequations (PDEs) for compressible and reacting flows through porous media has beendeveloped. The solver makes use of a pseudo-staggered arrangement, in order to preservesharp value changes in pressure and velocity fields across Diesel Particulate Filter (DPF)porous walls; the resulting form of the pressure correction equation is able to achieve afast convergence at very low permeability of the medium, also when it is associated withstrong grid non-orthogonality.A description of the theory adopted for the implementation of a highly efficient C++object oriented dynamic library is presented first. The library has been applied to thenew compressible solver for the multi-dimensional simulation of the hydrodynamics offull-scale wall-flow Diesel Particulate Filters. Code validation has been performed againstexperimental data available from the published literature.