Large Eddy Simulation of Liquid Fuel Spray and Combustion with Gradually Varying Grid 2013-01-2634
In this work, large eddy simulation (LES) with a K-equation subgrid turbulent kinetic energy model is implemented into the CFD code KIVA3V to study the features of liquid fuel spray and combustion using gradually varying grid in a constant volume chamber. The characteristic time-scale combustion model (CTC) incorporating a turbulent timescale is adopted to predict the combustion process and the SHELL auto-ignition model is used to predict auto-ignition. Combustion is also simulated using Parallel Detailed Chemistry with Lu's n-heptane reduced mechanism (58 species), which has been added into the KIVA3V-LES code. The computational results are compared with Sandia experimental data for non-reacting and reacting cases. As a result, LES can capture the complex structure of the spray and temperature distribution as well as the trend of ignition delay and flame lift-off length variations. Better results are obtained using the Parallel Detailed Chemistry than the CTC model.
Citation: Zhou, L., Luo, K., Jia, M., and Shuai, S., "Large Eddy Simulation of Liquid Fuel Spray and Combustion with Gradually Varying Grid," SAE Technical Paper 2013-01-2634, 2013, https://doi.org/10.4271/2013-01-2634. Download Citation
Author(s):
Lei Zhou, Kai Hong Luo, Ming Jia, Shi Jin Shuai
Affiliated:
Tsinghua University, University of Southampton, Dalian University of Technology
Pages: 10
Event:
SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Fuel injection
Combustion and combustion processes
Computational fluid dynamics
Simulation and modeling
Turbulence
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