Model Order Reduction for Reacting Flows: Laminar Gaussian Flame Applications

摘要

This paper shows how projection-based reduced modelling using the POD method combined with the DEIM is an effective strategy for reducing the cost of chemical kinetics evaluations in reacting flow simulations. The methodology was demonstrated here using a premixed H_2/O_2/Ar mixture problem but is applicable to general reaction models. Here we focused on the application of the POD-DEIM approach to the chemical kinetics model only; however, the POD method can also be applied to obtain a reduced model of the fluid dynamics model to gain additional reduction in overall simulation time of the coupled system. The reduced-order models can be parameterized and then used for design space studies as well as quantification of the effects of parameter uncertainties on output quantities of interest.