長方形断面柱まわりの流動と熱伝達 : 断面辺長比0.33～1.5の場合

抄録

Experimental investigations on the fluid Flow and heat transfer around rectangular cylinders were carried out in the range of subcritical Reynolds numbers. The width/height ratio (c/d) of a section was from 0.33 to 1.5. The local heat transfer coefficients around the cylinder become clear in connection with the Flow characteristics. The average heat transfer around the cylinder is given by N_um = C_mR_e^2/3 for c/d ≥0.67. And those of the side and rear faces are given by N_us= c_sR_e^2/3 and N_ub = c_bR^2/3, respectively. These constants c_m, c_s and c_b increase with an increase in drag coefficient. c_D. The average heat transfer coefficient of the rear face, h_b^^-, is correlated with the rms values of the fluctuating pressure, Δp, by the expression h_b^^-∝Δp^<0.30∼0.33.>