聚合物化合物层对喷射动力学的影响,由泡破裂产生的喷射动力学
Sainath A Barbhai1, Zhengyu Yang2, Jie Feng2
1Department of Aerospace Engineering, University of Illinois at Urbana-Champaign Urbana USA.
RSC advances
|March 11, 2025
概括
泡破裂会喷出更小,更多的滴,含有更多的聚合物,但更少,更广泛的滴,聚合物度增加. 这项研究绘制了喷气滴喷出泡破裂的条件.
科学领域:
- 流体动力学 流体动力学
- 表面科学是一门学科.
- 环境科学 环境科学
背景情况:
- 泡破裂驱动通过空气-液体接口进行质量运输,这对于气溶产生细胞外聚合物质等生物化学污染物的气溶至关重要.
- 这些生物污染物的非牛顿行为使泡破裂的物理复杂化,这一领域需要进一步探索.
- 了解复杂流体中的喷射动力学对于海洋生物学和环境科学至关重要.
研究的目的:
- 实验性地研究泡破裂事件的喷射动态,其中涉及一个聚合物化合物层.
- 分析聚合物度和层体积分数对喷气特性和滴形成的影响.
- 在涂层破裂泡中建立喷气滴喷射与无喷射的政权图.
主要方法:
- 使用涂上聚乙烯氧化物溶液的气泡对泡破裂的实验研究.
- 洞穴崩和随后的喷射动态的观察和记录.
- 在不同聚合物度和层体积分数下分析喷气速度,喷气半径和喷气落下特征.
主要成果:
- 复合层体积分数的增加导致了更高的喷气速度,更小的喷气半径,以及更多的,更小的喷气滴,这是由于增强的毛细管波阻尼.
- 聚合物度增加导致喷气速度降低,喷气半径增加,由于持续的粘弹性应力,喷气下降更少,更广泛.
- 开发了一个新的政权地图,区分喷射弹射和非弹射的条件.
结论:
- 聚合物质学显著改变了泡破裂喷射动力学和气溶生产.
- 这些发现提供了对有机物质通过气泡介导的气溶化中的质量传输机制的关键见解.
- 这项研究促进了对海洋生物和环境过程的理解,包括泡破裂.
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