On the Static Water Surface Impact due to Rainfall
碩士 === 國立成功大學 === 水利及海洋工程學系 === 86 === A rainfall generator that produces uniformly distributed rain is used in these experiments. These studies use a High Frame Rate Area Scan Digital Camera to take photographs of water surface after raindrops impact, an...
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ndltd-TW-086NCKU10830162015-10-13T11:06:11Z http://ndltd.ncl.edu.tw/handle/48568289447748841282 On the Static Water Surface Impact due to Rainfall 雨群對靜止水面衝擊之試驗研究 Ching, Hung-hen 簡宏亨 碩士 國立成功大學 水利及海洋工程學系 86 A rainfall generator that produces uniformly distributed rain is used in these experiments. These studies use a High Frame Rate Area Scan Digital Camera to take photographs of water surface after raindrops impact, and the image technique analyze the height of crown water column and the process which develop. The result of experiments shows that the height of water column increasesas the average size of raindrops increases. However, the average size of raindrops up to 4mm, the height of water column will not increase. The resultsof difference between single rain drop and group raindrop which impact on the static water surface reach five points. (1) When group raindrop impact on the static water surface and happen splash and cavity, it can not sure to form thecrown water column. (2) The crown water column has inclined direction upward. (3) The width of crown water column changes from thick to thin in the process which develop. (4) No phenomenon of the crown coalescence can be seen. (5) Theheight of crown water column grows not going with a deep cavity. Thephenomenons are more conspicuous when the average size of raindrops is larger.On the other hand, above phenomenons of group raindrop impact on the staticwater surface are more significantwhen the wave of the water surface grows. Liu Chung-ling, Wu Jin 劉長齡, 吳京 1998 學位論文 ; thesis 66 zh-TW |
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zh-TW |
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Others
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碩士 === 國立成功大學 === 水利及海洋工程學系 === 86 === A rainfall generator that produces uniformly distributed
rain is used in these experiments. These studies use a High
Frame Rate Area Scan Digital Camera to take photographs of water
surface after raindrops impact, and the image technique
analyze the height of crown water column and the process
which develop.
The result of experiments shows that the height of water column
increasesas the average size of raindrops increases.
However, the average size of raindrops up to 4mm, the height of
water column will not increase. The resultsof difference between
single rain drop and group raindrop which impact on the static
water surface reach five points. (1) When group raindrop impact
on the static water surface and happen splash and cavity, it can
not sure to form thecrown water column. (2) The crown water
column has inclined direction upward. (3) The width of crown
water column changes from thick to thin in the process which
develop. (4) No phenomenon of the crown coalescence can be seen.
(5) Theheight of crown water column grows not going with
a deep cavity. Thephenomenons are more conspicuous when the
average size of raindrops is larger.On the other hand, above
phenomenons of group raindrop impact on the staticwater
surface are more significantwhen the wave of the water surface
grows.
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author2 |
Liu Chung-ling, Wu Jin |
author_facet |
Liu Chung-ling, Wu Jin Ching, Hung-hen 簡宏亨 |
author |
Ching, Hung-hen 簡宏亨 |
spellingShingle |
Ching, Hung-hen 簡宏亨 On the Static Water Surface Impact due to Rainfall |
author_sort |
Ching, Hung-hen |
title |
On the Static Water Surface Impact due to Rainfall |
title_short |
On the Static Water Surface Impact due to Rainfall |
title_full |
On the Static Water Surface Impact due to Rainfall |
title_fullStr |
On the Static Water Surface Impact due to Rainfall |
title_full_unstemmed |
On the Static Water Surface Impact due to Rainfall |
title_sort |
on the static water surface impact due to rainfall |
publishDate |
1998 |
url |
http://ndltd.ncl.edu.tw/handle/48568289447748841282 |
work_keys_str_mv |
AT chinghunghen onthestaticwatersurfaceimpactduetorainfall AT jiǎnhónghēng onthestaticwatersurfaceimpactduetorainfall AT chinghunghen yǔqúnduìjìngzhǐshuǐmiànchōngjīzhīshìyànyánjiū AT jiǎnhónghēng yǔqúnduìjìngzhǐshuǐmiànchōngjīzhīshìyànyánjiū |
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