3 papers
physics.flu-dyn2020
Particle Pair Dispersion and Eddy Diffusivity in a High-Speed Premixed Flame
Ryan Darragh, Colin A. Z. Towery, Alexei Y. Poludnenko +1
Turbulent mixing is a physical process of fundamental importance in high-speed premixed flames. This mixing results in enhanced transport of temperature and chemical scalars, leadi…
physics.flu-dyn2020
Parameter Estimation for Subgrid-Scale Models Using Markov Chain Monte Carlo Approximate Bayesian Computation
Olga A. Doronina, Colin A. Z. Towery, Peter E. Hamlington
We use approximate Bayesian computation (ABC) combined with an "improved" Markov chain Monte Carlo (IMCMC) method to estimate posterior distributions of model parameters in subgrid…
physics.flu-dyn2019
Detonation initiation by compressible turbulence thermodynamic fluctuations
Colin A. Z. Towery, Alexei Y. Poludnenko, Peter E. Hamlington
Theory and computations have established that thermodynamic gradients created by hot spots in reactive gas mixtures can lead to spontaneous detonation initiation. However, the curr…