噴霧気流中に置かれた細線周りの着氷挙動と着氷限界熱流束 : 気流の温度と速度の影響

概要

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An experimental study is carried out on the characteristics and critical heat flux of ice accretion along a horizontal fine wire immersed in a cold air stream with water spray. The air stream velocity and temperature range from 3 to 10m/s and from -5 to -15℃, respectively and the average drop diameter of the water spray is about 0.14mm. To determine the effect of wire diameter on ice accretion, three diameters, namely, 0.5,0.8 and 1.0mm are selected. The growth process of ice accretion along the wire over time is photographed by a video camera. The critical heat flux is determined from the profile of the variation of wire temperature with loading electric power on the wire. It is found that the effect of air srream velocity on the ice accretion along the wire becomes significant as the air stream temperature decreases and the critical heat flux shows a linear increase with an increase in the air stream temperature and velocity within the conditions of the present experiments. The effect of wire diameter on the critical heat flux, however, is not evident in this study.
一般社団法人日本機械学会の論文
1997-11-25