周期運動をする凝縮器の伝熱性能に関する研究 : 鉛直平滑管上の液膜移動

概要

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The movement of the condensation liquid on a vertical smooth tube in three modes (heave, sway and roll) of sinusoidal vibration were studied experimentally in order to analyze the effect of motion on the heat transfer performance for a moving ocean platform such as the OTEC plant. The appearance of moving liquid was photographed by a video camera and the thickness of liquid film at the side of tube measured by the method using the dark and light difference of photographed images. The effect of heave motion on the film thickness was not detected, but the sway and roll motion resulted in the periodic change in the amount of film thickness following the tube motion. The dependencies of the maximum thickness and its generated position upon amplitude and frequency were discussed.
1988-07-25