液体表面へのドロップレットインパクト

B Ching, M W Golay, T J Johnson

Science (New York, N.Y.)

|November 2, 1984

まとめ

液体表面に衝突する単一滴が反発することは決して観察されなかった. 表面張力は,滴流の吸収と反発を支配し,エネルギーとモメンタムの保存が相互作用を説明します.

科学分野:

流体力学流体力学
表面物理学の表面物理学について

背景:

ドロップレットインパクト現象は,様々な産業および自然プロセスにおいて極めて重要です.
吸収と反発を含むドロップレット行動を理解することは,流体相互作用を予測するために不可欠です.

研究の目的:

深層の液体表面に衝撃を与える単一滴や滴流の吸収と反発を実験的に調査する.
ドロップレットストリームの衝撃と吸収の基準を確立する.
これらの相互作用を支配する支配的な物理的メカニズムを特定する.

主な方法:

深い液体に対する滴 (直径 <1200マイクロメートル) の衝撃の実験試験.
機械的エネルギーと運動量原理の保存の適用.
ドロップレット行動に対する表面張りの影響の分析.

主要な成果:

単一滴は一貫して吸収され,反発することは決して観察されなかった.
表面張りは,ドロップレット行動に影響を与える主要な要因として特定されました.
ドロップレットストリームにはインパクト基準が開発され,吸収とリバウンドを区別しました.

結論:

衝撃滴の振る舞いは,主に表面張力によって支配されます.
単一滴の衝撃は,リバウンドではなく吸収をもたらします.
確立された基準は,滴流と液体の相互作用を理解するための枠組みを提供します.

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