Numerical and experimental observations of the flow field inside a selective laser melting (SLM) chamber through computational fluid dynamics (CFD) and particle image velocimetry (PIV)

Xiang Xin Chen, Sz Jia Tzeng, Wei Cheng Wang

研究成果: Article

摘要

Collection and recycling of the metal powders ejected from the working plane are the primary objectives for improving the selective laser melting (SLM) process. The flow behaviors through the SLM working chamber are obviously significant and must be further studied to resolve these matters. In this study, we continued the studies presented previously to design a blow-to-suction device enlarged from 250 mm×250 mm to 500 mm×500 mm. The air curtain inside the SLM working chamber, instead of a parallel flow, was designed with a vertical downward blowing jet as well as two parallel suction devices. Computational and experimental fluid dynamics were conducted to simulate the flow field through the working chamber, using blowing nozzles of various shapes. Particle image velocimetry (PIV) was applied to investigate the flow field and to further verify the simulation results. The flow velocity profiles inside the chamber measured via PIV agreed well with those obtained through CFD simulation.

原文English
頁(從 - 到)450-461
頁數12
期刊Powder Technology
362
DOIs
出版狀態Published - 2020 二月 15

指紋

Velocity measurement
Flow fields
Computational fluid dynamics
Melting
Blow molding
Lasers
Air curtains
Parallel flow
Powder metals
Fluid dynamics
Flow velocity
Recycling
Nozzles
Computer simulation

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

引用此文

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