矩形流路内平板状障害物による飽和水液膜破断に関する検討 : 第1報, ドライパッチ特性の基本メカニズムの検討

概要

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An experimental investigation was performed on predicting drypatch characteristics based on the transient heated surface temperature and static pressure characteristics, using a flat-plate-type obstacle in a rectangular channel. Three points were clarified. (1) A relationship was obtained between the drypatch occurrence and the transient heated surface temperature in the obstacle and its downstream side using a map of the drypatch occurrence around the obstacle. (2) The mechanism and places of drypatch occurrence were investigated using the Boiling number Bo on heat transfer and the steam Weber number We_υ on fluid flow as factors affecting drypatch phenomena. (3) There was a good correlation of drypatch occurrence between the steam Weber number and higher transient heated surface temperatures.
一般社団法人日本機械学会の論文
1990-10-25