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

概要

論文の詳細を見る
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>.
一般社団法人日本機械学会の論文
1988-11-15