LES of the Ignition Process of Non-premixed CH4 based on Dynamic Thickened Flame Model

DOI

10.2991/icmmct-17.2017.43How to use a DOI?

Keywords

ignition, large Eddy simulation, dynamic thickening flame model, Gauss heat source.

Abstract

Improve the accuracy of ignition calculate simulation through dynamic thickening of the of flame front in order to achieve Large Eddy Simulation (LES) solution scales. Taking the WALL model which takes the sticky near the wall into account as the sub-grid turbulence model, simulating the process of energy releasing of spark plug by the way of adding Gauss heat source to the energy function. 40ms of the ignition process is calculated based on the cold state flow field, and compare the numerical simulation results with corresponding experimental results abroad. It shows: The simulation accuracy of cold flow field of LES is good, and be able to capture small-size vortex; Large Eddy Simulation based on dynamic thickening flame model is an effective method to predict the dynamic diffusion processes of CH4 non-premixed flame; Recirculation zone plays an important role of fuel distribution, flame spread and stability.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yang Jiang
AU  - Yubing Lei
AU  - Apeng Gao
PY  - 2017/04
DA  - 2017/04
TI  - LES of the Ignition Process of Non-premixed CH4 based on Dynamic Thickened Flame Model
BT  - Proceedings of the 2017 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017)
PB  - Atlantis Press
SP  - 219
EP  - 226
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-17.2017.43
DO  - 10.2991/icmmct-17.2017.43
ID  - Jiang2017/04
ER  -