Influence of Different Fuel Components on Gas Detonation

  • LI Huakang ,
  • SHI Hongqing ,
  • WANG Du ,
  • WU Junkai ,
  • CUI Yongjing ,
  • CHU Fengming ,
  • TIAN Zhenyu
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  • 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China 
    2. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
    3. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
    4. China Aviation Development Beijing Aerospace Materials Research Institute, Beijing 100095, China
    5. University of Chinese Academy of Sciences, Beijing 100049, China
    6. State Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Online published: 2025-07-04

Supported by

This work is supported by the National Key R&D Program of China (2021YFA0716200), National Natural Science Foundation of China (52325604), CAS Project for Young Scientists in Basic Research (YSBR-028) and the Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences, Innovation guidance youth project (CXYJJ21-QN-001).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025

Abstract

The effect of different fuel mixtures (C2H2, C3H6, C3H8, C2H2+C3H6, C2H2+C3H8) on the acceleration of the gas detonation flame under the same detonation tube gun structure has been studied using numerical simulation. The trends of the internal parameters of the gun, as well as the variations of the gas flow velocity, temperature and pressure at the gun outlet with time were analyzed. At equivalence ratio of 1, the simulation results demonstrate that acetylene fuel produces the shortest detonation time and reaches the highest average gas flow velocity of 1031.6 m/s at the gun exit, and the acetylene detonation reaches the highest average temperature of 2750.6 K. The fastest speeds of OH and other parameters were produced by the detonation of C2H2 and its mixture fuels, which represents the fastest flame propagation. Propane detonation at the outlet of the gun to reach the maximum pressure of 0.66 MPa; internal to the gun, detonation of CO2 produced by the majority of the distribution of the wall region. Different fuel compositions lead to variations in the detonation spray effects, and altering the fuel composition can meet diverse requirements for detonation and spray particle characteristics.

Cite this article

LI Huakang , SHI Hongqing , WANG Du , WU Junkai , CUI Yongjing , CHU Fengming , TIAN Zhenyu . Influence of Different Fuel Components on Gas Detonation[J]. Journal of Thermal Science, 2025 , 34(4) : 1527 -1540 . DOI: 10.1007/s11630-025-2097-2

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