On Performance of Advection Schemes in the Prediction of Diesel Spray and Fuel Vapour Distributions

Paper i proceeding, 2008

We have investigated the performance of advection schemes (focusing mainly on Total Variation Diminishing, TVD, schemes) applied in modelling diesel sprays, and assessed their influence on liquid spray penetration and fuel vapour distribution. Here, we compare sprays simulated using several types of TVD schemes (Superbee, MUSCL, limited Linear, and UMIST) – and standard upwind and linear schemes as references – in conjunction with three different turbulence models (standard, RNG and Launder-Sharma k-ε models), to non-reacting diesel sprays observed in the Sandia high-pressure, high-temperature constant- volume vessel. The OpenFOAM CFD code was used for all of the simulations described. In addition to comparing the simulations to experimental data, we provide overall assessments of the performance and utility of the TVD schemes in multi- dimensional diesel modelling.