Flame instability analysis of diethyl ether-air premixed mixtures at elevated pressures

Zhang, Ni; Di, Yage; Huang, Zuohua; Zhang, Zhiyuan

doi:10.1007/s11434-009-0501-z

Cited by 17 publications

(9 citation statements)

References 17 publications

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“…There has been much work recently on the combustion characteristics of DEE, − but none that has impinged on the chemical kinetics of this system. In the present work, we have carried out pyrolysis and oxidation experiments behind reflected shock waves and constructed a detailed chemical reaction model to describe these.…”

Section: Introductionmentioning

confidence: 99%

A Multiple Shock Tube and Chemical Kinetic Modeling Study of Diethyl Ether Pyrolysis and Oxidation

et al. 2010

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The pyrolysis and oxidation of diethyl ether (DEE) has been studied at pressures from 1 to 4 atm and temperatures of 900-1900 K behind reflected shock waves. A variety of spectroscopic diagnostics have been used, including time-resolved infrared absorption at 3.39 mum and time-resolved ultraviolet emission at 431 nm and absorption at 306.7 nm. In addition, a single-pulse shock tube was used to measure reactant, intermediate, and product species profiles by GC samplings at different reaction times varying from 1.2 to 1.8 ms. A detailed chemical kinetic model comprising 751 reactions involving 148 species was assembled and tested against the experiments with generally good agreement. In the early stages of reaction the unimolecular decomposition and hydrogen atom abstraction of DEE and the decomposition of the ethoxy radical have the largest influence. In separate experiments at 1.9 atm and 1340 K, it is shown that DEE inhibits the reactivity of an equimolar mixture of hydrogen and oxygen (1% of each).

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Section: Introductionmentioning

confidence: 99%

A Multiple Shock Tube and Chemical Kinetic Modeling Study of Diethyl Ether Pyrolysis and Oxidation

et al. 2010

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“…Burning velocities of DEE have been measured by Gibbs and Calcote [23] using a Bunsen burner flame cone and the apex-cone method. Di et al [24] and Zhang et al [25,26] used a spherically propagating flame in a cylindrical vessel to obtain laminar burning velocities and study the combustion characteristics of diethyl ether. However no results have been reported for DEE flame velocities using the heat flux method.…”

Section: Introductionmentioning

confidence: 99%

Measurements of flat-flame velocities of diethyl ether in air

Gillespie

Metcalfe

Dirrenberger

et al. 2012

Energy

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This study presents new adiabatic laminar burning velocities of diethyl ether in air, measured on a flat-flame burner using the heat flux method. The experimental pressure was 1 atm and temperatures of the fresh gas mixture ranged from 298 to 398 K. Flame velocities were recorded at equivalence ratios from 0.55 to 1.60, for which stabilization of the flame was possible. The maximum laminar burning velocity was found at an equivalence ratio of 1.10 or 1.15 at different temperatures. These results are compared with experimental and computational data reported in the literature. The data reported in this study deviate significantly from previous experimental results and are well-predicted by a previously reported chemical kinetic mechanism.

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“…This includes IDTs measured in RCMs and shock tubes 67,[70][71][72][73] ; speciation measurements collected from JSR, plug flow reactor (PFR), and shock tube experiments 10,[74][75][76][77][78] ; and several studies of DEE flames. [79][80][81][82][83][84] In parallel to this experimental exploration of DEE combustion, several studies have attempted to produce detailed kinetic models to predict the observed behavior.…”

Section: Diethyl Ethermentioning

confidence: 99%

Automatic mechanism generation for the combustion of advanced biofuels: A case study for diethyl ether

Michelbach,

Tomlin

2023

Int J of Chemical Kinetics

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Advanced biofuels have the potential to supplant significant fractions of conventional liquid fossil fuels. However, the range of potential compounds could be wide depending on selected feedstocks and production processes. Not enough is known about the engine relevant behavior of many of these fuels, particularly when used within complex blends. Simulation tools may help to explore the combustion behavior of such blends but rely on robust chemical mechanisms providing accurate predictions of performance targets over large regions of thermochemical space. Tools such as automatic mechanism generation (AMG) may facilitate the generation of suitable mechanisms. Such tools have been commonly applied for the generation of mechanisms describing the oxidation of non‐oxygenated, non‐aromatic hydrocarbons, but the emergence of biofuels adds new challenges due to the presence of functional groups containing oxygen. This study investigates the capabilities of the AMG tool Reaction Mechanism Generator for such a task, using diethyl ether (DEE) as a case study. A methodology for the generation of advanced biofuel mechanisms is proposed and the resultant mechanism is evaluated against literature sourced experimental measurements for ignition delay times, jet‐stirred reactor species concentrations, and flame speeds, over conditions covering φ = 0.5–2.0, P = 1–100 bar, and T = 298–1850 K. The results suggest that AMG tools are capable of rapidly producing accurate models for advanced biofuel components, although considerable upfront input was required. High‐quality fuel specific reaction rates and thermochemistry for oxygenated species were required, as well as a seed mechanism, a thermochemistry library, and an expansion of the reaction family database to include training data for oxygenated compounds. The final DEE mechanism contains 146 species and 4392 reactions and in general, provides more accurate or comparable predictions when compared to literature sourced mechanisms across the investigated target data. The generation of combustion mechanisms for other potential advanced biofuel components could easily capitalize on these database updates reducing the need for future user interventions.

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Flame instability analysis of diethyl ether-air premixed mixtures at elevated pressures

Cited by 17 publications

References 17 publications

A Multiple Shock Tube and Chemical Kinetic Modeling Study of Diethyl Ether Pyrolysis and Oxidation

A Multiple Shock Tube and Chemical Kinetic Modeling Study of Diethyl Ether Pyrolysis and Oxidation

Measurements of flat-flame velocities of diethyl ether in air

Automatic mechanism generation for the combustion of advanced biofuels: A case study for diethyl ether

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