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Updated: Sep 13, 2025

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在elasto-viscoplastic滴滴撞击超水表面时,具有珠串结构的奇点喷流
Xiaoyun Peng1, Tianyou Wang2, Zhizhao Che2
1State Key Laboratory of Engines, Tianjin University, Tianjin, 300350, China.
Journal of colloid and interface science
|August 2, 2025
概括
研究人员发现了一种新的奇异喷气,当弹性粘性塑料 (EVP) 滴撞击表面时,它具有串上珠 (BOAS) 结构. 这一发现改变了我们对非牛顿流体冲击中的液体运输动态的理解.
科学领域:
- 流体动力学 流体动力学
- 非牛顿流体力学 不牛顿流体力学
- 表面科学是一门学科.
背景情况:
- 单点喷流对于各种应用中的液体运输至关重要.
- 了解非牛顿式液滴冲击动态对于推进流体运输现象至关重要.
研究的目的:
- 为了研究在弹性粘性塑料 (EVP) 滴对超表面冲击时形成的奇异喷气的新奇动力学.
- 分析EVP滴水冲击中的腔体崩和喷气形成阶段.
主要方法:
- 使用高速成像和数字图像处理来捕捉和分析EVP滴水冲击.
- 用理论分析量化研究滴滴撞击和单一喷气形成的关键阶段.
主要成果:
- 发现了一种具有珠串结构 (BOAS) 的新奇奇喷气,与牛顿滴水冲击不同.
- EVP滴滴腔的崩显示出功率定律依赖 (指数1/2) 和半径依赖的缩放 (指数-1).
- 液体柱缩从惯性毛细血管转变为弹性毛细血管机制,确定了BOAS喷气形成的关键条件.
结论:
- 这项研究揭示了EVP滴滴撞击中的新型奇点射流 (BOAS),扩大了对流体奇点现象的理解.
- 这些发现提供了关键的洞察力,了解断机制的转变以及管理BOAS单一喷气形成的条件.
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