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首页> 外文期刊>日本マリンエンジニアリング学会誌 >Boiling Transition Phenomena to CHF in Water and FC-72
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Boiling Transition Phenomena to CHF in Water and FC-72

机译：在水和FC-72中沸腾向CHF的过渡现象

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摘要

The pool boiling CHFs were investigated to clarify the generalized phenomena of transition to film boiling at transient condition. The CHFs were measured on a 1.0 mm diameter platinum horizontal cylinder for exponential heat generation rates with various periods for saturated liquids at atmospheric pressure. The incipience of boiling processes was completely different depending on pre-pressurization. Also, the dependence on pre-pressurization in transient CHFs changed due to the wettability of boiling liquids. The trend of typical CHFs were clearly divided into the first, second, and third groups for long, short, and intermediate periods, respectively. Due to the effect of pre-pressurization, the boiling incipience mechanism was replaced from that by active cavities entraining vapor to that by the HSN in originally flooded cavities.
机译：对池沸腾CHF进行了研究，以阐明瞬态条件下向膜沸腾过渡的一般现象。在直径为1.0 mm的铂制水平圆筒上测量CHF的指数发热速率，以及在大气压力下饱和液体在不同时间段内的指数发热速率。取决于预加压，沸腾过程的开始是完全不同的。同样，由于沸腾液体的润湿性，瞬态CHF中对预加压的依赖性也发生了变化。典型的瑞士法郎的趋势在长期，短期和中期分别明显地分为第一，第二和第三组。由于预加压的作用，沸腾开始机理从原来的被带入水蒸气的活动型腔代替了被水淹没的空腔中的HSN代替的主动型腔。

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