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 …

Anaerobic digestion, mixing, environmental fate, and transport

CC Chang, C Kuo‐Dahab… - Water Environment …, 2019 - Wiley Online Library
Anaerobic digestion, mixing, environmental fate, and transport - Chang - 2019 - Water
Environment Research - Wiley Online Library Skip to Article Content Skip to Article Information …

A generalized partially stirred reactor model for turbulent closure

E Quadarella, A Péquin, A Stagni, A Parente… - Proceedings of the …, 2023 - Elsevier
Abstract A generalized Partially-Stirred Reactor (PaSR) model is presented in this work
based on the inclusion of multiple chemical times. The PaSR model has shown promising …

Modern developments in filtered density function

S Sammak, Z Ren, P Givi - Modeling and Simulation of Turbulent Mixing …, 2020 - Springer
An overview is presented of recent developments in filtered density function (FDF)
methodology as utilized for large eddy simulation (LES) of turbulent flows. The review is …

Mixing time scale models for multiple mapping conditioning with two reference variables

C Straub, A Kronenburg, OT Stein… - Flow, Turbulence and …, 2021 - Springer
A novel multiple mapping conditioning (MMC) approach has been developed for the
modelling of turbulent premixed flames including mixture inhomogeneities due to mixture …

Assessment of finite-rate chemistry effects in a turbulent dilute ethanol spray flame

Y Yin, T Yang, H Zhou, Z Ren - Journal of Propulsion and Power, 2022 - arc.aiaa.org
Simulations of a benchmark ethanol dilute spray flame are performed with four combustion
models at different levels of closure for turbulence–chemistry interaction (TCI) to provide a …

Filtered density function simulations of a near-limit turbulent lean premixed flame

H Zhou, Z Ren, DH Rowinski, SB Pope - Journal of Propulsion and …, 2020 - arc.aiaa.org
The predictive numerical simulation of near-limit turbulent premixed combustion, in which
the turbulent intensity is high and the fuel/air mixture is near the flammability limit, remains …

On the modeling of scalar mixing timescale in filtered density function simulation of turbulent premixed flames

T Yang, Q Xie, H Zhou, Z Ren - Physics of Fluids, 2020 - pubs.aip.org
A new closure of the scalar mixing timescale is formulated to enhance the predictability of
large eddy simulation (LES)/filtered density function (FDF) simulations for turbulent premixed …

Investigation of reaction-induced subgrid scalar mixing in LES/FDF simulations of turbulent premixed flames

X Wang, J Wei, X Su, H Zhou, Z Ren - Physical Review Fluids, 2022 - APS
Large eddy simulation (LES) combined with filtered density function (FDF), ie, LES/FDF, is
an effective approach for high-fidelity simulation of turbulent flames. In this work, LES/FDF …

A mixing timescale model for differential mixing in transported probability density function simulations of turbulent non-premixed flames

J Wei, X Su, X Wang, H Zhou, ER Hawkes, Z Ren - Physics of Fluids, 2022 - pubs.aip.org
The modeling of scalar mixing timescale remains a primary challenge in the transported
probability density function (TPDF) method. The variation of scalar mixing timescale among …