Euler-Lagrange Simulation of Fine Particle Discharge Rate under Accelerated Air Ventilation Circumstances

• Zhilong WANG

  Faculty of Mechanical and Precision Instrument Engineering 710048 Xi’an University of Technology

• Tong ZHAO

  Faculty of Mechanical and Precision Instrument Engineering 710048 Xi’an University of Technology Division of Artificial Systems Science Graduate School of Engineering Chiba University

• Kai LIU

  Faculty of Mechanical and Precision Instrument Engineering 710048 Xi’an University of Technology

• Masahiro TAKEI

  Division of Artificial Systems Science Graduate School of Engineering Chiba University

抄録

Particle discharge rate R_out is simulated with Euler-Lagrange approach under accelerated air ventilation circumstances. Two factors of Stokes number St and acceleration are taken into account to investigate their influences on R_out. The particle mass flow rate q_m as an important parameter is used to evaluate the essential of the R_out. St is rescaled by changing particle diameter d_p. Consequently, the tendency of R_out is clarified under accelerated air ventilation circumstances. In the simulation, the unsteadiness of the fluid velocity field produces the unsteady forces, which include pressure gradient force f_PG and virtual mass force f_VM. Unsteady forces provide a time delay to particle movement and reduce R_out. Moreover, smaller St (St=0.001 and 0.1) increases the fine R_out, and larger St (St=1.2 and 5.0) is adverse. In the case of St=0.1, the R_out are fundamentally identical regardless of the accelerations. Nevertheless, in the case of St=1.2, the increase of the acceleration of the air ventilation circumstances reduce the R_out .

収録刊行物

• 混相流

  混相流 28 (3), 355-365, 2014

  日本混相流学会

キーワード

• Accelerated air ventilation circumstances
• Acceleration
• Euler-Lagrange simulation

詳細情報

• CRID: 1390282679414380928
• NII論文ID: 130004713823
• NII書誌ID: AN10088286
• DOI: 10.3811/jjmf.28.355
• ISSN: 18815790
• ISSN: 09142843
• NDL書誌ID: 025815568
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025815568
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
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