SIMULATION OF AIR FLOW AND PARTICLE PICKUP PERFORMANCE BY A SUCTION NOZZLE WITH CIRCULAR CROSS-SECTION

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2023 Vol.28, Issue 4 Preview Page Next Page

SIMULATION OF AIR FLOW AND PARTICLE PICKUP PERFORMANCE BY A SUCTION NOZZLE WITH CIRCULAR CROSS-SECTION 원형 단면의 흡입 노즐에 의한 공기 유동 및 입자의 픽업 성능 해석: 김태희, 최재성, 김동주*
T. Kim, J. Choi and D. Kim*; 금오공과대학교 기계공학과

Dept. of Mechanical Engineering, Kumoh National Institute of Technology

31 December 2023. pp. 98-105

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Abstract

Air flow and particle motions by a suction nozzle with a circular cross-section are numerically investigated to understand the effect of several parameters on flow characteristics and particle behaviors. The parameters considered include nozzle moving speed, nozzle-to-floor distance, and particle diameter. Based on the particle trajectories, the particles are divided into three groups: particles sucked in by the flow approaching the nozzle, particles sucked in by the backflow after passing around the nozzle, and particles that are too far from the nozzle to be picked up. The particle suction efficiency increases as the nozzle speed decreases, irrespective of particle diameter. However, the suction rate shows particle-size-dependent behaviors, showing an optimal nozzle speed for the case of the large particle diameter. The nozzle-to-floor distance greatly influences the particle pickup efficiency, showing that an optimal value exists.

Keywords

흡입 노즐(Suction nozzle)

입자(Particle)

전산유체역학(CFD)

흡입효율(Pickup efficiency)

흡입율(Pickup rate)

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