Fluid Flow and Heat Transfer Around a Circular Cylinder with Vortex Generators

• IGARASHI Tamotsu

  The National Defense Academy

• IIDA Yasuhisa

  Defense Facilities Administration Agency

抄録

Experimental studies on the fluid flow and heat transfer around a circular cylinder with vortex generators were carried out in the range 1.3×10^4<__=Re<__=5.2×10^4. Depending on the height of the vortex generator and the Reynolds number, four flow patterns were found to result from the transition of the boundary layer and the flow separation. The local and average heat transfer coefficients on the rear surface vary with changes in the drag coefficient, the rms fluctuating pressure and the reciprocal of the Strouhal number. The heat transfer coefficients at the rear stagnation point, h_r, for the four patterns are related to the Strouhal number as Nu_r/Re^<2/3>=0.018/S^<1.4>, within an error of 10%, and also to the rms fluctuating pressure, Δp_r, at the rear stagnation point as : h_<r∝>Δp_r^<0.31>.

収録刊行物

• JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties

  JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties 31 (4), 701-708, 1988-11-15

  一般社団法人日本機械学会

キーワード

• Convective Heat Transfer
• Transition in Boundary Layer
• Vortex Generator
• Circular Cylinder
• Flow Pattern
• Separated Flow

詳細情報

• CRID: 1571980077084065664
• NII論文ID: 110002494219
• NII書誌ID: AA10680596
• ISSN: 09148817
• 本文言語コード: en
• データソース種別:
  • CiNii Articles