ID#: 6
Abstract Title: Numerical Studies of Shock Reflection and Ignition
Session Title: Shock Ignition
Session Date: 7/31/01
Session Start Time: 11:20 AM
Contributing Author: Wang, B.
Organization: Forschungszentrum J¸lich
Country: Germany
Authors: Boliang Wang, Werner Rehm
Short Abstract: A new computational-fluid-dynamics code has been developed for the simulation of hydrogen combustion events concerning hydrogen safety analysis. This code describes the feedback of the flow fields with chemical reactions. It considers detailed chemical kinetics for two-dimensional flow fields. Also it is possible to use a two-step kinetic model for global reaction processes. First validation of calculations were performed for ignition induced by shock reflections from an axis of symmetry and from a flat wall with a long narrow gap. The results show a remarkable agreement. With the two-step model, the experimentally observed physical-chemical phenomena can be reproduced. It is also found that the calculated results are strongly dependent on the kinetic scheme applied. Therefore, several schemes from the literature have been studied.