静圧一定の平板乱流境界層に及ぼす主流部乱れの影響 : 第1報,平均量に及ぼす影響について

抄録

This paper describes the effects of free stream turbulence on turbulent heat transfer from flat plate without pressure gradient. Measurements of velocity, temperature, and their fluctuations were performed carefully by I-I-V type anemometry. The remarkable increase of turbulent Prandtl number, especially in the buffer layer, was observed with the free stream turbulence. Also, the calculated local Nusselt number, approximated by considering this effect of turbulent Prandtl number, agreed well with the measured values.