Comprehensive Experimental and Simulation Study of the Ignition Delay Time Characteristics of Binary Blended Methane, Ethane, and Ethylene over a Wide Range of Temperature, Pressure, Equivalence Ratio, and Dilution

A comprehensive
experimental and kinetic modeling study of the
ignition delay time (IDT) characteristics of some binary blends of
C1–C2 gaseous hydrocarbons such as methane/ethylene,
methane/ethane, and ethane/ethylene was performed over a wide range
of composition (90/10, 70/30, 50/50%), temperature (∼800–2000
K), pressure (∼1–40 bar), equivalence ratio (∼0.5–2.0),
and dilution (∼75–90%). An extensive literature review
was conducted, and available data were extracted to create a comprehensive
database for our simulations. Based on the existing literature data,
an experimental matrix was designed using the Taguchi approach (L9) in order to identify and complete the experimental matrix
required to generate a comprehensive experimental IDT set necessary
for the validation of a chemical kinetic model. The required high-
and low-temperature IDTs were collected using low-/high-pressure shock
tubes and rapid compression machines, respectively. The predictions
of NUIGMech1.0 are examined versus all of the available experimental
data, including those taken in the current study using the IDT simulations
and a correlation technique. Moreover, the individual effect of the
studied parameters, including mixture composition, pressure, equivalence
ratio, and dilution on IDT, is investigated over the studied temperature
range. Correlations that were developed based on NUIGMech1.0 are presented
for each specific blended fuel over the conditions studied. These
correlations show an acceptable performance versus the experimental
data.