325 両端密閉型ヒートパイプにおける熱流体関連振動の可視化による考察

概要

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In this paper, presented is an experimental study of thermal flow-induced vibration in an unlooped heat pipe. This was made of winding glass tube to visualize the phenomenon. It was heated at the bottom to control temperature by heater, while was cooled at the top to keep temperature constant. Liquid column oscillation was excited with boiling and expansion of vapor plug. When liquid volume-fraction was large, the magnitude of pressure oscillation was large and low frequency was dominant. Furthermore, non-dimensional temperature θ_′was proposed to investigate the threshold of excited conditions. With respect to liquid volume fraction, θ_′was alternately varied up and down. This phenomenon was evaluated to be strongly dependent on the liquid volume fraction.
一般社団法人日本機械学会の論文
2002-09-13