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Numerical Simulation of a Vortex Combustor Based on Aluminum and Steam

Author

Listed:
  • Xianhe Chen

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Zhixun Xia

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

  • Liya Huang

    (Department of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Likun Ma

    (Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China)

Abstract

In this paper we report a new development in the numerical model for aluminum-steam combustion. This model is based on the diffusion flame of the continuum regime and the thermal equilibrium between the particle and the flow field, which can be used to calculate the aluminum particle combustion model for two phase calculation conditions. The model prediction is in agreement with the experimental data. A new type of vortex combustor is proposed to increase the efficiency of the combustion of aluminum and steam, and the mathematical model of the two phase reacting flow in this combustor is established. The turbulence effects are modeled using the Reynolds Stress Model (RSM) with Linear Pressure-Strain approach, and the Eddy-Dissipation model is used to simulate the gas phase combustion. Aluminum particles are injected into the vortex combustor, forming a swirling flow around the chamber, whose trajectories are traced using the Discrete Phase Model (DPM). The simulation results show that the vortex combustor can achieve highly efficient combustion of aluminum and steam. The influencing factors, such as the eccentric distance of the inlet of aluminum particles, particle size and steam inlet diameter, etc., are studied.

Suggested Citation

  • Xianhe Chen & Zhixun Xia & Liya Huang & Likun Ma, 2016. "Numerical Simulation of a Vortex Combustor Based on Aluminum and Steam," Energies, MDPI, vol. 9(12), pages 1-16, December.
  • Handle: RePEc:gam:jeners:v:9:y:2016:i:12:p:1072-:d:85418
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    References listed on IDEAS

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    1. Mercati, Stefano & Milani, Massimo & Montorsi, Luca & Paltrinieri, Fabrizio, 2012. "Design of the steam generator in an energy conversion system based on the aluminum combustion with water," Applied Energy, Elsevier, vol. 97(C), pages 686-694.
    2. David Greatrix, 2015. "Numerical Evaluation of the Use of Aluminum Particles for Enhancing Solid Rocket Motor Combustion Stability," Energies, MDPI, vol. 8(2), pages 1-21, February.
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    Cited by:

    1. Maria Grazia De Giorgi & Antonio Ficarella, 2017. "Editorial Special Issue “Combustion and Propulsion”," Energies, MDPI, vol. 10(6), pages 1-4, June.

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