Ignition delay measurements for n-dodecane/N2/air mixtures at high pressures
Author
Liskovich, GaryOther Contributors
Oehlschlaeger, Matthew A.; Anderson, Kurt S.; Borca-Tasçiuc, Theodorian;Date Issued
2017-12Subject
Mechanical engineeringDegree
MS;Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.; Attribution-NonCommercial-NoDerivs 3.0 United StatesMetadata
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Ignition delay time measurements have been made in reflected shock experiments for n-dodecane at conditions relevant to diesel engines and those specifically found in the Engine Combustion Network Spray A experiments. The present shock tube studies were carried out for n-dodecane/air mixtures at equivalence ratios of 1.0 and 2.0 for nominal pressures of 40, 60, and 80 atm and also at 60 atm for stoichiometric n-dodecane/O2/N2 mixtures containing 13% and 15% O2, to emulate reduced-O2 mixtures containing exhaust gas recirculation. The parameter space spans the low-temperature, negative-temperature-coefficient, and high-temperature regimes (774 to 1163 K), providing characterization of the complex temperature dependence of ignition important in low-temperature combustion processes and the pressure and oxygen concentration dependencies across the three kinetic regimes. The measurements are compared a priori to several recent reduced kinetic models with experiment-modeling deviations near the experimental uncertainties in several cases. To our knowledge, the present experiments represent the first gas-phase homogenous autoignition measurements made for n-dodecane at the extremely high-pressure conditions found in Spray A.;Description
December 2017; School of EngineeringDepartment
Dept. of Mechanical, Aerospace, and Nuclear Engineering;Publisher
Rensselaer Polytechnic Institute, Troy, NYRelationships
Rensselaer Theses and Dissertations Online Collection;Access
CC BY-NC-ND. Users may download and share copies with attribution in accordance with a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License. No commercial use or derivatives are permitted without the explicit approval of the author.;Collections
Except where otherwise noted, this item's license is described as CC BY-NC-ND. Users may download and share copies with attribution in accordance with a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License. No commercial use or derivatives are permitted without the explicit approval of the author.