Turbulence Modulation by Particles Having the Same Response Time

• TSUJI Takuya

  大阪大学大学院工学研究科機械工学専攻

• TANAKA Toshitsugu

  大阪大学大学院工学研究科機械工学専攻

Bibliographic Information

Other Title

• 同じ応答時間を持つ粒子による乱流変調
• オナジ オウトウ ジカン オ モツ リュウシ ニ ヨル ランリュウ ヘンチョウ コウストークススウ ジョウケン デノ ケントウ
• (High Stokes Number Case)
• （高ストークス数条件での検討)

Abstract

Turbulence modulation by high-inertia particles having the same response time and same volume loading is investigated. Particles slightly larger than Kolmogorov micro-scale are released into a steady isotropic homogeneous turbulence. The magnitude of turbulence attenuation increases as the particle becomes smaller. In the small attenuation case, vortex tubes can dodge around the particles and develop. In the large attenuation case, the vortex tubes collapse and high dissipation region which is responsible for turbulence attenuation is formed near the particle surface.

Journal

• Progress in Multiphase Flow Research

  Progress in Multiphase Flow Research 2 91-99, 2007

  THE JAPANESE SOCIETY FOR MULTIPHASE FLOW

Keywords

• Turbulence modulation
• Particle response time
• Stokes number
• Direct numerical simulation
• Immersed boundary method

Details

• CRID: 1390001205274908416
• NII Article ID: 10019504564
• NII Book ID: AA12204080
• DOI: 10.3811/pmfr.2.91
• ISSN: 18816088
• ISSN: 18815804
• NDL BIB ID: 9352362
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9352362
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed