Machine learning assisted modeling of mixing timescale for LES/PDF of high-Karlovitz turbulent premixed combustion

J Liu, H Wang - Combustion and Flame, 2022 - Elsevier
Accurate modeling of mixing in the transported probability density function (PDF) method
remains a great challenge, especially for turbulent premixed combustion under extreme …

Small scales, many species and the manifold challenges of turbulent combustion

SB Pope - Proceedings of the Combustion Institute, 2013 - Elsevier
A major goal of combustion research is to develop accurate, tractable, predictive models for
the phenomena occurring in combustion devices, which predominantly involve turbulent …

Simple models of turbulent flows

SB Pope - Physics of Fluids, 2011 - pubs.aip.org
Stochastic Lagrangian models provide a simple and direct way to model turbulent flows and
the processes that occur within them. This paper provides an introduction to this approach …

Large eddy simulation/probability density function modeling of a turbulent CH4/H2/N2 jet flame

H Wang, SB Pope - Proceedings of the Combustion Institute, 2011 - Elsevier
In this work, we develop the large-eddy simulation (LES)/probability density function (PDF)
simulation capability for turbulent combustion and apply it to a turbulent CH4/H2/N2 jet flame …

Quantifying kinetic uncertainty in turbulent combustion simulations using active subspaces

W Ji, Z Ren, Y Marzouk, CK Law - Proceedings of the Combustion Institute, 2019 - Elsevier
Uncertainty quantification in expensive turbulent combustion simulations usually adopts
response surface techniques to accelerate Monte Carlo sampling. However, it is …

Stratified jet flames in a heated (1390 K) air cross-flow with autoignition

DJ Micka, JF Driscoll - Combustion and Flame, 2012 - Elsevier
Measurements are reported of the heat release profiles, the flame lengths, flame structure
and other properties of a reacting jet-in-cross-flow (JICF) for two fuels. The air was heated to …

Near-lean blowoff dynamics in a liquid fueled combustor

N Rock, B Emerson, J Seitzman, T Lieuwen - Combustion and Flame, 2020 - Elsevier
This paper describes an analysis of the near-lean blow off (LBO) dynamics of spray flames,
including the influence of fuel composition upon these dynamics. It is motivated by the fact …

Engineering aspects of complex gas turbine combustion mixers part I: High Delta-T

H Mongia - 49th AIAA aerospace sciences meeting including the …, 2011 - arc.aiaa.org
An overview is given on the use of several complex multiswirler devices in gas turbine
combustion and attendant technological advances in emissions, cooling, pattern factor …

LES/PDF modeling of autoignition in a lifted turbulent flame: Analysis of flame sensitivity to differential diffusion and scalar mixing time-scale

W Han, V Raman, Z Chen - Combustion and Flame, 2016 - Elsevier
The stabilization of lifted flames involves a complex competition between small-scale mixing
and propagation of flame kernels at the base of the flame. Here, the effect of species …

Computational study of lean premixed turbulent flames using RANSPDF and LESPDF methods

DH Rowinski, SB Pope - Combustion Theory and Modelling, 2013 - Taylor & Francis
A computational study is performed on a series of four piloted, lean, premixed turbulent jet
flames. These flames use the Sydney Piloted Premixed Jet Burner (PPJB), and with jet …