Constant volume n-Heptane autoignition using One-Dimensional Turbulence
- Abstract Constant volume premixed lean n-Heptane/air autoignition at high pressure is investigated using the One-Dimensional Turbulence (ODT) model. The configuration consists of a 1D fixed volume domain with a prescribed velocity spectrum and temperature fluctuations superimposed on an initial uniformly elevated scalar field. The sensitivity of the heat release rate and pressure evolution to the initial temperature distribution is studied by imposing different initial temperature fields while holding the mean, RMS and integral length scale of the field constant. Three detailed chemical mechanisms are employed for the prediction of autoignition and heat release rate. To mitigate the high computational cost associated with the calculation of the chemical source terms in the stiff complex mechanisms, an approach based on the Strang-Splitting method is presented. Finally, a …
Author: | Juan Ali Medina MéndezORCiD, Heiko SchmidtORCiD, Fabian MaußORCiD, Zoltan Jozefik |
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DOI: | https://doi.org/10.1016/j.combustflame.2017.12.015 |
ISSN: | 0010-2180 |
Title of the source (English): | Combustion and Flame |
Document Type: | Scientific journal article peer-reviewed |
Language: | English |
Year of publication: | 2018 |
Tag: | One-Dimensional Turbulence; n-Heptane autoignition |
Volume/Year: | 190 |
First Page: | 388 |
Last Page: | 401 |
Faculty/Chair: | Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Numerische Strömungs- und Gasdynamik |
Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Thermodynamik / Thermische Verfahrenstechnik |