層流境界層内に二次元的な細いワイヤ-を設置した場合の熱伝達の実験 (千谷茂教授・宇野茂道教授・松井貞信教授御退官記念特集号)
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概要
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This investigation was carried out to clarify the effects of two dimensional thin wire, placed within laminar boundary layer on the local heat transfer rate using two dimensional wind tunnel. The temperature differece between main flow and the plate was made by heated plate under the condition of a constant heat flux, and from its resalts the local heat transfer coefficient in a flat plate was calculated. especialy the thin wire was attached a flat plate, we measured the intencity of turbulence by the hot wire anemometer in the boundary layer and main flow. Comparing the results heat transfer and turbulance, we found that the intentensity of turbulence and its region were larger, the local heat transfer rate in its region was augmented, and laminar flow was transformed into the turbulent flow just to behind the wire. and placed in the same condition of gradient of velocity, the wire diameter was larger, the local heat transfer rate was more increased in the region behind the thin wire. However the wire diameter was in certain size, the velocity gradient was not influence on heat transfer.
- 琉球大学理工学部の論文
- 1975-09-00
琉球大学理工学部 | 論文
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