An adaptive 3-D CFD solver for modeling explosions on large industrial environmental scales

CFD modelling of hydrogen release, dispersion and combustion for automotive scenarios

“…The release, dispersion and combustion calculations have been performed using the same codes and models that were employed in the Stockholm accident analysis (Venetsanos et al, 2003). More specifically the ADREA-HF code (Bartzis, 1991;Wu¨rtz et al, 1996) was applied for dispersion and the REACFLOW code (Wilkening & Huld, 1999) for combustion.…”

“…Some of the validation studies have been published, see Huld, Peter, and Staedtke (1996), Wilkening and Huld (1999), Bielert et al (2001Bielert et al ( , 2003, Baraldi et al (2003), Gallego et al (2005), Breitung et al (2005), Wilkening and Baraldi (2006).…”

“…The turbulent quantities serve to calculate the turbulent viscosity for the Favre-averaged flow equations (Wilkening & Huld, 1999). At the same time the turbulent quantities are employed as input for a model for the turbulent combustion.…”

Source, dispersion and combustion modelling of an accidental release of hydrogen in an urban environment

“…The ignition was modelled by assuming a small spherical region to be at a high temperature and partially burned. The simulation employed a dynamically adaptive grid [8]. The adaptation criterion was chosen to be the difference in temperature.…”

“…Two different CFD codes were used in that analysis, one for the dispersion (ADREA-HF [7]) and the other for the combustion (REACFLOW code [8]), due to the differences in physics and scales between the dispersion and combustion phenomena.…”