A coke deposition self‐removal TBCC thermal management with multi‐catalyst coating

Feng, Yuqing; Lv, Qinhang; Deng, Shiyu; Liu, Shuyuan; Cao, Yong; Qin, Jiang

doi:10.1002/er.5452

Cited by 10 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For hypersonic flying vehicles, Endothermic hydrocarbon fuel has been widely considered to be used as the propellant and coolant for thermal protection 1‐4 . The fuel experiences thermal decomposition in the heat exchanger of flow channels to produce small hydrocarbon species and hydrogen 5‐7 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study of ignition behaviors of pyrolysis gas of kerosene‐based endothermic hydrocarbon fuel

2021

View full text Add to dashboard Cite

Summary The pyrolysis gas consisting of 29.4% CH4, 21.3% C2H4, 30.8% C2H6, and 18.5% C3H6 in mole fraction is presented, as the surrogate of the actual gaseous pyrolysis products. At the conditions of TC = 877.7‐963 K, PC = 3.22‐4.37 MPa, φ = 0.5 and 1.0, the ignition delays of pyrolysis gas/air (diluted with 52% Ar) have been measured. With TC or PC increasing, the ignition delay time decreases. The auto‐ignition of φ = 1.0 is faster than that of φ = 0.5. Furthermore, two widely used small hydrocarbons chemical mechanisms are validated with the measured results. The USC‐II mechanism can well predict experimental results at high‐T regimes, but fails at low‐T regimes. By sensitivity analysis of temperature, the two elementary reactions C2H6 + OH = C2H5 + H2O (negative sensitivity coefficient) and C3H6 + OH = aC3H5 + H2O (positive sensitivity coefficient) have been identified, which have higher reactivity at low‐T and lower reactivity at high‐T. Considering the extreme uncertainty of rate constants of C3H6 + OH = aC3H5 + H2O, the kinetic parameters have been modified for improving the predictions. The validated results indicate that the optimized mechanism improves predictions of the auto‐ignition behavior at low temperature regimes.

show abstract

Section: Introductionmentioning

confidence: 99%