Computational Fluid Dynamics Simulations of Aerosol Behavior in a High Speed (Heubach) Rotating Drum Dustiness Tester

Details

• Journal Article:
  Particuology
• Personal Author:
  Chen, Hongyu ; Jog, Milind A. ; Turkevich, Leonid A.
• Description:
  Potential exposure from hazardous dust may be assessed by evaluating the dustiness ofthe powders being handled. Dustiness is the tendency of a powder to aerosolize with a given input of energy. Previously we used computational fluid dynamics (CFD) to numerically investigate the flow inside the European Standard (EN15051) rotating drum dustiness tester during its operation. The present work extends those CFD studies to the widely used Heubach rotating drum. Air flow characteristics are investigated within the Abe-Kondoh-Nagano k-epsilon turbulence model; the aerosol is incorporated via a Euler-Lagrangian multiphase approach. The air flow inside these drums consists of a well-defined axial jet penetrating relatively quiescent air. The spreading of the Heubach jet results in a fraction of the jet recirculating as back-flow along the drum walls; at high rotation rates, the axial jet becomes unstable. This flow behavior qualitatively differs from the stable EN15051 flow pattern. The aerodynamic instability promotes efficient mixing within the Heubach drum, resulting in higher particle capture efficiencies for particle sizes d < 80 um. Description provided by NIOSH
• Subjects:
  • Aerosols
  • AKN k-epsilon Turbulence
  • Behavior
  • Dust
  • Euler-Lagrangian Multiphase
  • Occupational Health
  • Particulate Matter
  • Safety
• Keywords:
  • Fluids; Aerosols; Behavior; Dusts; Airflow; Models; Particle size;
  • Author Keywords: Rotating drum; Dustiness; Euler-Lagrangian multiphase; AKN k-epsilon turbulence
• Source:
  Particuology 2023 Jan; 72:68-80
• ISSN:
  1674-2001
• Pubmed ID:
  37207251
• Pubmed Central ID:
  PMC10193456
• Document Type:
  Text
• Funding:
  CC999999/ImCDC/Intramural CDC HHSUnited States/
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DFSE - Division of Field Studies and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  39 pdf pages
• Volume:
  72
• NIOSHTIC Number:
  nn:20065261
• Contact Point Address:
  Leonid A. Turkevich, Division of Field Studies and Engineering (DFSE), National Institute for Occupational Safety & Health (NIOSH), The Centers for Disease Control & Prevention (CDC), Alice Hamilton Laboratory, 1090 Tusculum Avenue, Cincinnati, OH 45226
• Email:
  LLT0@cdc.gov
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Download URL:
  https://stacks.cdc.gov/view/cdc/128762/cdc_128762_DS1.pdf
• File Type:
  [PDF - 6.91 MB]
• Collection(s):
  National Institute for Occupational Safety and Health ; CDC Public Access
• Main Document Checksum:
  urn:sha-512:97a40f4b9d79920233637653fd6aae314037bc3d5bda488f0e9178136ba241e4a452f7284edec19895809c016df9bb46110bebde2f2c8936b2b7383301ac480f