Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of Particle Shape for Powder Flow on Hopper Surface

호퍼 표면에서의 분말 유동에 대한 입자 형상의 영향

  • Kang, Min-Chang (School of Mechanical Design Engineering, Kumoh Naional Institute of Technology) ;
  • Bang, Sang-Wook (School of Mechanical Design Engineering, Kumoh Naional Institute of Technology) ;
  • Park, Junyoung (School of Mechanical Design Engineering, Kumoh Naional Institute of Technology)
  • 강민창 (금오공과대학교 기계설계공학과) ;
  • 방상욱 (금오공과대학교 기계설계공학과) ;
  • 박준영 (금오공과대학교 기계설계공학과)
  • Received : 2022.07.22
  • Accepted : 2022.07.28
  • Published : 2022.09.30
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Abstract

The flow at the top surface of the hopper is of particular industrial interest. Previously, the velocity distribution inside the hopper was predicted using the simple, void and spot models, which are equations for the particle flow field. However, because these equations cannot predict the velocity distribution at the top surface, a new equation has been recently proposed. This study employed the discrete element method with the changed shape of the particles. Based on the results, the shape of the particle had no effect on the discharge angle and shape of the velocity distribution; however, it greatly affected the size of the velocity distribution and bed thickness of the flowing particles. Therefore, in the future, it is necessary to modify the theoretical equation by considering the shape of the particles.

Keywords

Acknowledgement

이 연구는 금오공과대학교 대학 학술연구비로 지원되었음(2021년).

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