Publikationsserver der RWTH Aachen University
Simulation von Verbrennungsprozessen mit einem stochastischen Partikel-Modell
Abstract
dc:descriptionA new method for the simulation of combustion processes is developed that includes fluctuations. The simulation of reaction-diffusion-systems is extended by the variables temperature and velocity so that heat release by the chemical reactions as well as a flowfield can be represented. The model is based on a mesoscopic description of molecules in sub-volumes. The evolution of the system is determined by rates – probabilities over time – for the respective processes chemical reaction, diffusion, and flow. The time evolution of the probability of the system state is described by a Master-Equation which can be simulated with the minimal-process-method – a Monte-Carlo method. The auto-ignition of hydrogen with oxygen and methane with air is simulated to calculate the ignition delay time as a stochastic variable. For methane-air auto-ignition, the simulated ignition delay times are compared to shock tube experiments with satisfactory results. The transport processes are modeled and applied to two examples: equalization of a concentration difference by diffusion and a counterflow.
Degree
thesis:*- Grantor dc:publisher
- Publikationsserver der RWTH Aachen University
- Year dc:date
- 2002
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Frisque, Andrea
- Contributors dc:contributor
-
- Schnakenberg, Jürgen
Subjects
dc:subject × 2Rights
dc:rights- Statement dc:rights
-
- info:eu-repo/semantics/openAccess
- Language dc:language
- ger
Identifiers
dc:identifier.*- OAI identifier oai:identifier
- oai:publications.rwth-aachen.de:57099