AM06-14-001 液体金属流体層に生じる熱対流運動の実験的研究(対流(1),一般講演)
書誌事項
- タイトル別名
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- AM06-14-001 Experimental study of thermal convection in liquid metal layer
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Thermal convection in liquid gallium layer is investigated as a fundamental study for Rayleigh-Benard convection in low Prandtl number fluid using ultrasonic velocity profiler, UVP. Measured velocity profiles visualize a convective motion in the liquid gallium layer, and it is a roll shape motion. Spatio-temporal velocity profile shows that there are two types of spatial fluctuation of the convection roll. Two axes-simultaneous velocity profile measurement clarifies that expand and contraction of convection roll has a phase delay on the direction of the rotating axis of the roll. Frequency analysis of the obtained instantaneous velocity distribution shows that the convective motion has unique frequency component of the velocity fluctuation at the boundaries between the rolls. The frequency component cannot be detected at smaller Rayleigh number, under R=1×10^4. The frequency is proportional to the Rayeigh number to the power 0.376.
収録刊行物
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- 日本流体力学会年会講演論文集
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日本流体力学会年会講演論文集 2006 177-, 2006-09-05
日本流体力学会
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詳細情報 詳細情報について
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- CRID
- 1542261570215806720
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- NII論文ID
- 110008458801
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- NII書誌ID
- AA11567941
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- 本文言語コード
- ja
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- データソース種別
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- NDL-Digital
- CiNii Articles