Abstract
Reliable data on fundamental combustion parameters are essential to validate kinetic schemes under a wide range of experimental conditions. Laminar burning velocity is one such fundamental intrinsic property of a flammable mixture. The challenges in determining the effect of simultaneous change in temperature and pressure on the burning velocity of low-calorific value syngas–air mixtures are presented. Comparing the present experiments with available kinetic schemes at elevated temperature and pressure reveals poor prediction capabilities. The major contributing factor to this discrepancy is the high sensitivity of key reactions at high temperatures and pressure conditions. The challenges of direct use of the experimental data to optimize kinetic schemes for the syngas–air mixtures are discussed.
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Abbreviations
- \(\alpha\) :
-
Temperature exponent
- \(\alpha_{{\text{t}}}\) :
-
Thermal diffusivity
- \(\beta\) :
-
Pressure exponent
- \(\delta\) :
-
Flame thickness
- \(\phi\) :
-
Equivalence ratio
- \(\rho\) :
-
Mixture density
- \(S_{u}\) :
-
Laminar burning velocity
- \(\chi_{{{\text{H}}_{{2}} }}\) :
-
Hydrogen content
- FFCM:
-
Foundational fuel chemistry model
- GRI:
-
Gas research institute
- IGCC:
-
Integrated gasification and combined cycle
- LBV:
-
Laminar burning velocity
- LCV:
-
Low-calorific value
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Acknowledgements
Financial assistance by the Government of India in the form of a fellowship for Senior Research Fellow (SRF) is sincerely acknowledged.
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Appendix: Experimental Data
Appendix: Experimental Data
The following tables provide the experimental results obtained using the diverging channel method for various compositions. Table 2 shows the detailed composition of the syngas considered. Tables 3, and 4 show the laminar burning velocity and temperature exponents obtained from the experiments, respectively. Table 5 shows the target parameters used for the optimization.
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Varghese, R.J., Kumar, S. (2022). Laminar Burning Velocity Measurements at Elevated Pressure and Temperatures and the Challenges in Kinetic Scheme Optimization. In: Gupta, A.K., De, A., Aggarwal, S.K., Kushari, A., Runchal, A.K. (eds) Advances in Energy and Combustion. Green Energy and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-16-2648-7_13
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