Applied Chemical Engineering

Influence of the experimental setup parameters on the deviation of the similarity criteria in the experimental study of the model boundary conditions from the similarity criteria of the full-scale combustion chamber

S.K. Osipov

Department of Innovative Technologies for High-Tech Industries, National Research University "Moscow Power Engineering Institute", Moscow, 111250, Russia

P.A. Bryzgunov

Department of Innovative Technologies for High-Tech Industries, National Research University "Moscow Power Engineering Institute", Moscow, 111250, Russia

M.M Shaikh

Department of Innovative Technologies for High-Tech Industries, National Research University "Moscow Power Engineering Institute", Moscow, 111250, Russia

D.S. Pisarev

Department of Innovative Technologies for High-Tech Industries, National Research University "Moscow Power Engineering Institute", Moscow, 111250, Russia

A.N. Vegera

Department of Innovative Technologies for High-Tech Industries, National Research University "Moscow Power Engineering Institute", Moscow, 111250, Russia

DOI: https://doi.org/10.59429/ace.v8i1.5645

Keywords: combustion chamber; SCO2; GTU; similarity criteria

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Abstract

This study investigates the combustion processes of methane in an oxygen and carbon dioxide environment within oxygen-fuel energy complexes (OFC). The unique operating conditions, characterized by high pressures (up to 300 atm) and the use of CO2 as a diluent, necessitate a thorough understanding of the combustion dynamics, which differ significantly from traditional gas turbine units (GTU). An experimental setup, inspired by existing literature, is proposed to evaluate the combustion characteristics of methane under these conditions.

Key objectives include establishing similarity criteria for hydrodynamic, thermal, and mass transfer processes to ensure the validity of experimental results. The analysis identifies critical parameters such as Reynolds, Euler, Boltzmann, Prandtl, and Damköhler numbers, which serve as benchmarks for achieving operational similarity between model and natural combustion scenarios. The findings indicate that while complete similarity across all criteria is unattainable, satisfactory levels can be achieved for specific processes under controlled conditions.

The proposed experimental stand is designed to replicate the conditions of OFC combustion chambers, incorporating advanced measurement systems for accurate monitoring of temperature, pressure, and flow rates. The study emphasizes the importance of conducting separate tests for mass transfer processes to ensure comprehensive evaluations of combustion dynamics.

This research provides valuable insights for the design and optimization of burner devices in OFC applications, contributing to the advancement of cleaner and more efficient energy production technologies. The established methodologies and criteria can guide future experimental studies, enhancing the understanding of combustion processes in high-pressure environments.

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References

[1]. Chan W. et al. Thermodynamic analysis and optimization of Allam cycle with a reheating configuration //Energy Conversion and Management. – 2020. – Т. 224. – С.113382.

[2]. Zuev K. I. Fundamentals of similarity theory: lecture notes. – 2011, p.51.

[3]. Guryanov, A.I., Evdokimov, O.A., Guryanova, M.M. and Veretennikov, S.V. (2020). Criterion analysis and experimental study of combustion mechanisms in a bidirectional swirling flow and their relationship with pollutants emission. International Journal of Energy Research, 45(4), pp.5500–5516. doi:https://doi.org/10.1002/er.6178.

[4]. Norkin N. N. On approximate fire modeling of stationary gas combustion processes // Bulletin of Tomsk Polytechnic University. Engineering of Georesources. - 1948. - V. 64. - P. 220-231.

[5]. Anderson R. et al. Oxy-fuel turbo machinery development for energy intensive industrial applications //Energy Procedia. – 2014. – Т. 63. – С. 511-523.

[6]. Saanum I., Ditaranto M. Experimental study of oxy-fuel combustion under gas turbine conditions //Energy & Fuels. – 2017. – Т. 31. – №. 4. – С. 4445-4451.

[7]. Aminov R. Z., Schastlivtsev A. I. Experimental assessment of the composition of generated steam during combustion of hydrogen in oxygen // High Temperature Thermophysics. - 2020. - Vol. 58. - No. 3. - P. 437-444.

[8]. Roman Weber, Marco Mancini, On scaling and mathematical modelling of large scale industrial flames, Journal of the Energy Institute, Volume 93, Issue 1, 2020, Pages 43-51, ISSN 1743-9671, https://doi.org/10.1016/j.joei.2019.04.010.

[9]. Rene Prieler, Bernhard Mayr, Martin Demuth, Davor Spoljaric, Christoph Hochenauer, Application of the steady flamelet model on a lab-scale and an industrial furnace for different oxygen concentrations, Energy, Volume 91, 2015, Pages 451-464, ISSN 0360-5442, https://doi.org/10.1016/j.energy.2015.08.070.

[10]. Wang, S. and Shen, Y. (2025). CFD-DEM modelling of dense gas-solid reacting flow: Recent advances and challenges. Progress in Energy and Combustion Science, [online] 109, p.101221. doi:https://doi.org/10.1016/j.pecs.2025.101221.

[11]. Gratton, J. (1991). Similarity and Self Similarity in Fluid Dynamics.

[12]. Anders Rasmuson (2014). Mathematical modeling in chemical engineering. United Kingdom ; New York: Cambridge University Press, p.43.

[13]. Rapp, B.E. (2017). Chapter 9 - Fluids. [online] ScienceDirect. Available at: https://www.sciencedirect.com/science/article/abs/pii/B9781455731411500095.

[14]. Singh, M.R., Stevens, J.C. and Weber, A.Z. (2014). Design of Membrane-Encapsulated Wireless Photoelectrochemical Cells for Hydrogen Production. Journal of The Electrochemical Society, [online] 161(8), pp.E3283–E3296. doi:https://doi.org/10.1149/2.033408jes.

[15]. Saldana, M., Gallegos, S., Gálvez, E., Castillo, J., Eleazar Salinas-Rodríguez, Cerecedo-Sáenz, E., Hernández-Ávila, J., Navarra, A. and Toro, N. (2024). The Reynolds Number: A Journey from Its Origin to Modern Applications. Fluids, [online] 9(12), pp.299–299. doi:https://doi.org/10.3390/fluids9120299.