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Figure 1. 

Ignition delay times of OME_1–4/air. Symbols are experimental data of OME₁ from Jacobs et al.^[18] and of OME_2–4 from Cai et al.^[26]. Lines denote results calculated with kinetic models.

Figure 2. 

Laminar burning velocities of OME_1–4/air. Symbols are experimental data of OME_1–2 from Shrestha et al.^[29], of OME₃ from Sun et al.^[23], and of OME₄ from Richter et al.^[47]. Lines denote results calculated with kinetic models.

Figure 3. 

Species concentrations during the oxidation of OME_1–4. Symbols are experimental data of OME₁ from Sun et al.^[5], of OME₂ from Wang et al.^[13], and of OME₃ from Qiu et al.^[46] measured in jet stirred reactors, as well as experimental data of OME₄ from Gaiser et al.^[11] measured in a flow reactor. Lines denote results calculated with kinetic models.

Figure 4. 

Point-wise difference between model and data for the various combustion targets of OME_1–4.

Figure 5. 

Point-wise difference between model and data for the combustion of OME_1–3.

Figure 6. 

Ignition delay times of OME₁/O₂/Ar mixtures. Lines represent results calculated with the Li_2021^[19] and Cai_2020^[26] models. Symbols denote experimental data from Li et al.^[19].

Figure 7. 

Sensitivities of IDTs on elementary reactions for OME₁/O₂/Ar mixtures at 1,250 K, φ = 1.0, and p =1 atm, 4 atm, and 10 atm calculated using the (a) Li_2021^[19], and (b) the Cai_2020^[26] models.

Figure 8. 

Reaction fluxes during the auto-ignition of OME₁/O₂/Ar mixtures at 10 atm, 1,250 K, φ = 1.0, and 20% fuel consumption calculated using the Li_2021^[19] and Cai_2020^[26] models.

Figure 9. 

Comparison of rate constants of direct fuel decomposition reaction and fuel decomposition reactions via unimolecular H-atom transfer of OME₁ taken from the Li_2021^[19] and Cai_2020^[26] models.

Figure 10. 

Sensitivities of IDTs on elementary reactions for OME₃/air mixtures at 20 bar, φ = 1.0, and T = 600, 850, and 1,200 K, calculated by using the Shrestha_2022^[29] model.

Figure 11. 

Reaction fluxes during the auto-ignition of OME₃/air mixtures at 20 bar, φ = 1.0, T = 600, 850, and 1,200 K, and 20% fuel consumption calculated by using the Shrestha_2022^[29] model.

Figure 12. 

Sensitivities of LBVs on elementary reactions of OME₁₋₄/air mixtures at 400 K, 1 atm, and φ = 0.6, 1.0, and 1.4 calculated by using the Cai_2020^[26] model.

Figure 13. 

Concentrations of (a) OME₂, and (b) OME₃ during their pyrolysis at 1 atm and τ = 2 s. Lines represent results calculated with the Shrestha_2022^[29] model, Cai_2020^[26] model, and He_2018^[25] model. Symbols denote experimental data from Zhong et al.^[10].

Figure 14. 

Sensitivities of the mole fractions of OME₂ and OME₃ on elementary reactions during their pyrolysis at 1 atm, τ = 2 s, and 800 K calculated by using the Shrestha_2022^[29] model.

Figure 15. 

Species concentrations of OME₁/O₂/He mixture. Lines represent results calculated with the Li_2021^[19] and Jacobs_2019^[18] models. Symbols denote experimental data from Vermeire et al.^[17] measured in a jet stirred reactor at p = 1.07 bar, φ = 1.0, and τ = 2.83 s.

Figure 16. 

Sensitivities of the mole fractions of CH₃OH on elementary reactions during the oxidation of OME₁/O₂/He mixture at p = 1.07 bar, φ = 1.0, and T = 650 and 880 K calculated by using the Li_2021^[19] model.

Figure 17. 

Comparison of calculated and measured mole fractions of CH₃OH in the oxidation of OME₁/O₂/He mixture at p = 1.07 bar, φ = 1.0, and τ = 2.83 s. Lines represent results calculated with the Li_2021^[19], Jacobs_2019^[18], and modified Jacobs_2019^[18] models. Symbols denote experimental data from Vermeire et al.^[17].

Figure 18. 

Comparison of rate constants of the reaction CH₂OCH₂OCH₂O₂H = trioxane + OH in the Li_2021^[19] and Jacobs_2019^[18] models.