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An Experimental Investigation on the Influence of Temperature on the Normal Impact of Fine Particles with a Plane Surface

Author

Listed:
  • Ming Dong

    (School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China)

  • Jun Xie

    (School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China)

  • Linying Bai

    (School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China)

  • Sufen Li

    (School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China)

Abstract

This study investigated the rebound behavior of SiO 2 particles normally impacting a planar surface under different temperature conditions. The system has been characterized for an aerosol inlet temperature range of 20–190 °C, flow velocities of 0–20 ms −1 , and an impaction surface temperature range of 20–140 °C. For the first time, while keeping the same temperature gradient from the high- to low-temperature regions, the influences of varying temperature on the rebound behavior of SiO 2 particles normally impacting a plane surface were examined. At increased temperatures, the plastic deformation increases and the coefficient of restitution reduces. The critical velocity is between 0.542 and 0.546 m/s under condition 1 (the carrier gas temperature (T g ) and the impaction surface temperature (T W ) remain at room temperature of 20 °C), which increases to between 0.829 and 0.847 m/s under condition 4 (T g and T W remain at temperatures of 190 °C and 140 °C, respectively). The experimental results show that the critical velocity increases with increasing temperature.

Suggested Citation

  • Ming Dong & Jun Xie & Linying Bai & Sufen Li, 2014. "An Experimental Investigation on the Influence of Temperature on the Normal Impact of Fine Particles with a Plane Surface," Energies, MDPI, vol. 7(4), pages 1-16, March.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:4:p:2079-2094:d:34600
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    References listed on IDEAS

    as
    1. Ming Dong & Sufen Li & Jun Xie & Jian Han, 2013. "Experimental Studies on the Normal Impact of Fly Ash Particles with Planar Surfaces," Energies, MDPI, vol. 6(7), pages 1-18, July.
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