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溶融NaOHの表面張力およびマランゴニ対流挙動

発表形態:
原著論文
主要業績:
その他
単著・共著:
共著
発表年月:
2000年
DOI:
会議属性:
指定なし
査読:
有り
リンク情報:
CiNii

日本語フィールド

著者:
安廣祥一,有福智之, 有馬博史, 百崎 信, 佐藤恒之, 今石宣之
題名:
溶融NaOHの表面張力およびマランゴニ対流挙動
発表情報:
日本機械学会論文集B 巻: 66 号: 646 ページ: 1480-1487
キーワード:
Surface Tension, Marangoni Convection, Numerical Analysis, Flow Visualization, Molten NaOH,
概要:
抄録:
The surface tension of molten NaOH was measured by means of the maximum bubble pressure method under the various temperature conditions. The measured value has a maximum at T=723.1 K (T^*), which shows somewhat low temperature compared to that of Nakamura et al^(10). The two distinct temperature coefficients of surface tension (==σ/=T) with different signs were determined at the lower temperature (TT^*), but these values are much smaller than those reported by Nakamura et al^(10). Two dimensional numerical calculations were also conducted to simulate flow patterns due to thermal Marangoni convection formed in a small molten NaOH bridge under the various thermal conditions. By using the measured values of surface tension, the numerical results succeed in reproducing the observed visualiged flow cell patterns, and revealed that the different multi-roll cell flow patterns are distinguishably formed in the bridge depending upon the surface temperature distribution.

英語フィールド

Author:
YASUHIRO Shouichi, ARIFUKU Tomoyuki, ARIMA Hirofumi, MOMOSAKI Makoto, SATO Tsuneyuki,IMAISHI Nobuyuki
Title:
Announcement information:
Transactions of the Japan Society of Mechanical Engineers, B Vol: 66 Issue: 646 Page: 1480-1487
Keyword:
Surface Tension, Marangoni Convection, Numerical Analysis, Flow Visualization, Molten NaOH,
An abstract:
The surface tension of molten NaOH was measured by means of the maximum bubble pressure method under the various temperature conditions. The measured value has a maximum at T=723.1 K (T^*), which shows somewhat low temperature compared to that of Nakamura et al^(10). The two distinct temperature coefficients of surface tension (==σ/=T) with different signs were determined at the lower temperature (TT^*), but these values are much smaller than those reported by Nakamura et al^(10). Two dimensional numerical calculations were also conducted to simulate flow patterns due to thermal Marangoni convection formed in a small molten NaOH bridge under the various thermal conditions. By using the measured values of surface tension, the numerical results succeed in reproducing the observed visualiged flow cell patterns, and revealed that the different multi-roll cell flow patterns are distinguishably formed in the bridge depending upon the surface temperature distribution.


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