Journal
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Volume 57, Issue 8, Pages 1495-1503Publisher
SCIENCE PRESS
DOI: 10.1007/s11433-014-5507-0
Keywords
turbulence-chemistry interaction; detailed chemistry; probability density function; mixing models; large eddy simulations
Categories
Funding
- 111 Project [B13001]
- Organization Department of the Communist Party of China Central Committee
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Predictive simulation of engine combustion is key to understanding the underlying complicated physicochemical processes, improving engine performance, and reducing pollutant emissions. Critical issues as turbulence modeling, turbulence-chemistry interaction, and accommodation of detailed chemical kinetics in complex flows remain challenging and essential for high-fidelity combustion simulation. This paper reviews the current status of the state-of-the-art large eddy simulation (LES)/probability density function (PDF)/detailed chemistry approach that can address the three challenging modelling issues. PDF as a subgrid model for LES is formulated and the hybrid mesh-particle method for LES/PDF simulations is described. Then the development need in micro-mixing models for the PDF simulations of turbulent premixed combustion is identified Finally the different acceleration methods for detailed chemistry are reviewed and a combined strategy is proposed for further development.
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