水行者不受雨滴碰撞力的影响,并且被塌的石坑淹没
Daren A Watson1, Mason R Thornton2, Hiba A Khan2
1Department of Mechanical Engineering, Florida Polytechnic University, Lakeland, FL 33805.
概括
水行者通过独特的适应方式在雨滴撞击中幸存. 它们是由沃辛顿喷气机在空中推进的,它们的低密度和防水表面有助于生存,即使在二次冲击中也是如此.
科学领域:
- 流体动力学 流体动力学
- 昆虫生物力学 昆虫生物力学
- 表面科学是一门科学.
背景情况:
- 水行者生活在频繁降雨的环境中.
- 之前的研究还没有系统地研究水在雨滴冲击期间的生存情况.
- 雨滴可以对这些昆虫施加很大的力量.
研究的目的:
- 为了研究受雨水冲击的水行者生存机制.
- 为了分析落对水中步行者的影响所涉及的流体动力学.
- 了解决定水行者潜水或喷射的因素.
主要方法:
- 高速视频摄影记录了水上步行者的落冲击.
- 分析昆虫的机动反应和物理性质.
- 测量火山口动态和加速值.
主要成果:
- 直接的落下冲击最初迫使水行者进入地下.
- 一个沃辛顿喷气式飞机 (第一个喷气式飞机) 将昆虫推向空中.
- 二级石坑的崩塌决定了喷射或沉没,基于一个关键加速值 (~5.7g).
- 水行者具有适应短暂潜水和重新进入表面的适应性.
结论:
- 水行者由于其物理特征和机车能力,对雨滴的影响表现出了显著的弹性.
- 第二个石坑的动态在水行者生存中起着至关重要的作用.
- 这些发现提供了对水中环境中其他被动浮动粒子,如微塑料的行为的见解.
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