Global Sensitivity Analysis in Non-Premixed Counterflow Flames
Abstract
Numerical simulation of critical reacting flow features of hypersonic propulsion devices requires accurate representation of finite-rate chemical kinetics. However, the detailed kinetic models that are being developed for practical fuels of interest are rather complex, typically involve over hundreds of species in thousands of elementary reactions, and cannot be used in multi-dimensional simulation codes for the foreseeable future. The fundamental chemical kinetic parameters of detailed models are known to have a significant level of uncertainties due to the limited experimental data available. For this reason, detailed models continue to evolve with new experimental data as well as improved optimization algorithms. In particular, the problem of understanding the non-linear coupling between thousands of reactions that are being optimized can be addressed by using Global Sensitivity Analysis (GSA) techniques
Intellectual Merit
The purpose of the proposed research is to accelerate the understanding of reactions coupling and their importance, in particular by including non-premixed flames in GSA.
Broader Impact
The purpose of the proposed research is to accelerate the understanding of reactions coupling and their importance, in particular by including non-premixed flames in GSA.
Use of FutureGrid
Using Genesis II software already configured on FutureGrid to perform computation
Scale Of Use
Several batches of 1000-2000 jobs Jobs run 4-8 hours each