Efficient time stepping for reactive turbulent simulations with stiff chemistry

H Wu, PC Ma, M Ihme - 2018 AIAA Aerospace Sciences Meeting, 2018 - arc.aiaa.org
A combination of a steady-state preserving operator splitting method and a semi-implicit
integration scheme is proposed for efficient time stepping in simulations of unsteady reacting …

[HTML][HTML] A general predictive methodology for fuel-mixture properties up to supercritical conditions

E Geber, C Rodriguez, IK Karathanassis… - Fluid Phase …, 2023 - Elsevier
A predictive thermodynamic model is utilized for the calculation of fuel properties of
oxymethylene dimethyl ethers (OME 3–4), surrogates for gasoline, diesel and aviation fuel …

Comparison of finite-rate chemistry and flamelet/progress-variable models II: Sandia Flame E

S Yang, X Wang, V Yang, W Sun - 2018 AIAA Aerospace Sciences …, 2018 - arc.aiaa.org
Due to the increasing demand of combustion-based energy and its environmental concerns,
high-fidelity simulation of turbulent combustion becomes highly important. For any practical …

Data-driven dimension reduction in turbulent combustion: Utility and limitations

AC Nunno, BA Perry, JF Macart, ME Mueller - AIAA Scitech 2019 Forum, 2019 - arc.aiaa.org
T combustion is a problem of many scales and many species. For a practical turbulent
combustion system, there are hundreds of species and thousands of reactions, meaning that …

Lyapunov exponent and Wasserstein metric as validation tools for assessing short-time dynamics and quantitative model evaluation of large-eddy simulation

H Wu, PC Ma, Y Lv, M Ihme - 2018 AIAA Aerospace Sciences Meeting, 2018 - arc.aiaa.org
The objective of this work is to address the need for assessing the quality of large-eddy
simulations with particular application to turbulent reacting flows. Such assessments include …

Subspace adaptivity in Rosenbrock–Krylov methods for the time integration of initial value problems

P Tranquilli, R Glandon, A Sandu - Journal of Computational and Applied …, 2021 - Elsevier
Abstract The Rosenbrock–Krylov family of time integration schemes is an extension of
Rosenbrock-W methods that employs a specific Krylov based approximation of the linear …

Adaptive Krylov-type time integration methods

P Tranquilli, R Glandon, A Sandu - arXiv preprint arXiv:1910.02514, 2019 - arxiv.org
The Rosenbrock-Krylov family of time integration schemes is an extension of Rosenbrock-W
methods that employs a specific Krylov based approximation of the linear system solutions …