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Numerical Simulation of Magnesium Dust Dispersion and Explosion in 20 L Apparatus via an Euler–Lagrange Method

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  • Tao Fu

    (School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
    Engineering Research Center, New Energy System Engineering and Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Yun-Ting Tsai

    (School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
    Engineering Research Center, New Energy System Engineering and Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Qiang Zhou

    (School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
    Engineering Research Center, New Energy System Engineering and Equipment, Xi’an Jiaotong University, Xi’an 710049, China
    State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

Computational fluid dynamics (CFD) was used to investigate the explosion characteristics of a Mg/air mixture in a 20 L apparatus via an Euler–Lagrange method. Various fluid properties, namely pressure field, velocity field, turbulence intensity, and the degree of particle dispersion, were obtained and analyzed. The simulation results suggested that the best delayed ignition time was 60 ms after dust dispersion, which was consistent with the optimum delayed ignition time adopted by experimental apparatus. These results indicate that the simulated Mg particles were evenly diffused in the 20 L apparatus under the effect of the turbulence. The simulations also reveal that the pressure development in the explosion system can be divided into the pressure rising stage, the maximum pressure stage, and pressure attenuation stage. The relative error of the maximum explosion pressure between the simulation and the experiments is approximately 1.04%. The explosion model provides reliable and useful information for investigating Mg explosions.

Suggested Citation

  • Tao Fu & Yun-Ting Tsai & Qiang Zhou, 2022. "Numerical Simulation of Magnesium Dust Dispersion and Explosion in 20 L Apparatus via an Euler–Lagrange Method," Energies, MDPI, vol. 15(2), pages 1-12, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:402-:d:719018
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    References listed on IDEAS

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    1. Louis Schlapbach & Andreas Züttel, 2001. "Hydrogen-storage materials for mobile applications," Nature, Nature, vol. 414(6861), pages 353-358, November.
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