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中文提要:實驗的結果發現，純水的液膜型態隨著噴流速度的變化區分為
四種模式：封閉液緣與週期性掉落模式；-封閉液緣與散射液滴模式；R開
放液緣與散射液滴模式；‾完全發展模式。而高黏滯性液體形成之液膜型
態隨著噴流速度的變化共區分為九種模式：階梯式封閉液緣模式；-封閉
液緣模式；R封閉液緣與穿孔破裂模式；‾週期性掉落模式；°開放液緣
模式；±開放液緣與穿孔破裂模式；2開放液緣與散射液滴模式；3開放液
緣、散射液滴與穿孔破裂模式；’完全發展模式。在較小的噴流速度下，
霧化液滴的平均粒徑隨著液體黏滯性與表面張力的增加而變大。但是在較
高的噴流速度下，霧化液滴的平均粒徑與液體的黏滯性及表面張力無關，
皆趨近於50mm。
英文提要:The results show that there are four spray patterns
formed by impinging-jetproduced by pure water jets presented in
sequence with increasing jetsvelocities. They are defined as (1)
close-rim with periodic-drops, (2)close-rim with shedding-drops,
(3) open-rim with shedding-drops, and (4) fully-developed. On
the other hand, there are nine spray patterns formed by high
viscosity fluids, which are defined as (1) close-rim with
cascade,(2) close-rim, (3) close-rim with perforate, (4)
periodic-drops, (5) open-rim, (6) open-rim with perforate, (7)
open-rim with shedding-drops, (8) open-rim with shedding-drops
and perforate, and (9) fully-developed .With the measurement of
Malvern particle sizer, the mean drop size is bigger as the
viscosity and surface-tension of the working fluid getting
higher at lower impinging-jet velocity regime. However, it is
atomized intoabout 50mm droplets at high impinging-jet velocity
regime which is independent on the physical properties of the
working fluid.
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