A Comprehensive Experimental and Simulation Study of Ignition Delay Time Characteristics of Single Fuel C₁–C₂ Hydrocarbons over a Wide Range of Temperatures, Pressures, Equivalence Ratios, and Dilutions

Abstract

A comprehensive experimental and modelling study of the ignition delay time (IDT) characteristics of some single prominent C1-C2 hydrocarbons including methane, ethane, and ethylene have been performed over a wide range of temperatures (~800-2000 K), pressures (~1-80 bar), equivalence ratios (~0.5-2.0), and dilutions (~75-90%). An extensive literature review was conducted, and available data were extracted to create a comprehensive database used in our simulations. Based on 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 validation set necessary for validation of a chemical kinetic model. The required IDTs were recorded using a high-pressure shock tube for shorter IDTs and a rapid compression machine for longer times, which encompass high-and low-temperature ranges, respectively. The predictions of a C 3 -NUIG mechanism have been compared with all of the available experimental data including those from the current study using the IDT simulations and the correlation technique. Moreover, individual and total effects of the studied parameters including pressure, equivalence ratio, and dilution on IDT have been studied over a wide temperature range. Moreover, correlations which were developed based on the NUIG mechanism are presented for each specific fuel over the conditions studied. These correlations show acceptable performance versus the experimental Taguchi matrix data.

Combustion of n-C3–C6 Linear Alcohols: An Experimental and Kinetic Modeling Study. Part II: Speciation Measurements in a Jet-Stirred Reactor, Ignition Delay Time Measurements in a Rapid Compression Machine, Model Validation, and Kinetic Analysis

“…The experimental uncertainty is estimated to be 2% in the reported temperature and 25% in reported IDTs, due mainly to the uncertainties in the initial temperature (±3–13 K). 9 Ignition data and volume profiles for each tested condition are reported in the Supporting Information .…”

Hierarchical Auto-Ignition and Structure-Reactivity Trends of C2–C4 1-Alkenes

“…Additional comparisons with the literature data are available in the Supplementary Materials. [29] and Badigmohammadi et al [28], lines: model simulations. For 1-butene, both NUIGMech 1.1 and AramcoMech 2.0 still predict fairly well the measured data at all pressures, (Figure 9).…”

“…To avoid non-ideal effects on the ST data and heat release effect on the RCM data, we have pre-processed the experimental data before fitting the correlation. Specifically, for ethylene, the RCM data from Baigmohammadi et al [28] were replaced by the results simulated by NUIGMech 1.1 with the constant volume approach. The data from Yang et al [32] can be predicted only by their model, thus the IDTs data over 1000 µs were replaced by the results simulated by the ChuanDa model, also with the constant volume approach.…”

Влияние Состава Газовых Смесей На Задержку Их Самовоспламенения И Нормальную Скорость Пламени

“…Если в условиях экспериментов [45] для Рис. 16. Зависимость нормальной скорости пламени Uн метан-водород-воздушных смесей от величины коэффициента избытка горючего при нормальных условиях.…”

“…Низкие значения MN существенно снижают мощность ГПД [12] и сокращают срок его службы вследствие повышенного износа. Например, компания Cummins Westport гарантирует штатную работу своих двигателей лишь при использовании газового топлива с MN более 65, а для некоторых типов -и более 75 [13] [14][15][16], либо с использованием машин быстрого сжатия [16][17][18], т.е. при высоких температурах и давлениях в сильно разбавленных инертными газами смесях.…”