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Masonry curtain walls employ brick or stone veneers supported by the building's structure to form an external cladding system that is both aesthetically appealing and functional. These walls are erected through two principal techniques, first by traditional layering of masonry units and second by using prefabricated panels. Traditional construction relies on steel shelf angles attached to the spandrel beam for support, with high-bond mortars ensuring secure attachment of masonry veneer...
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Steady, Laminar Flow Between Parallel Plates01:17

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Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
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When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
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在落的水柱后面的短暂的浮动电影.

Abhijit K Kushwaha1, Matthew B Jones2, Jesse Belden3

  • 1King Abdullah University of Science and Technology, Mechanical Engineering, Physical Science and Engineering, (KAUST), Thuwal 23955, Saudi Arabia.

Physical review letters
|June 23, 2025
PubMed
概括
此摘要是机器生成的。

水从管道中排水,形成复杂的膜. 我们使用高速成像和建模来了解流体力如何产生不同的薄膜形状,并预测它们何时断裂,有助于工业应用.

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科学领域:

  • 流体动力学 流体动力学
  • 软物质物理学 软物质物理学
  • 多相系统 多相系统

背景情况:

  • 在垂直管中排水的水柱可以留下复杂的,轴对称的液体膜.
  • 这些片的多样性形态还没有完全被理解.

研究的目的:

  • 为了研究从垂直管中拖延的状液体薄膜的形成和分解动态.
  • 根据特征的时间尺度将观察到的电影行为分为不同的模式.
  • 开发一个理论框架,预测电影的行为和过渡.

主要方法:

  • 高速成像以捕捉电影动态.
  • 分析流体力量的第一原则建模.
  • 对薄膜出现,收缩和破裂的特征时间尺度的分析.

主要成果:

  • 证明了薄膜形态是由惯性,表面张力,重力和粘性力的平衡引起的.
  • 将观察到的行为分类为不同的模式,并预测它们之间的过渡.
  • 开发了一个理论框架,准确地捕捉管出口的短暂膜速度和厚度.

结论:

  • 这项研究解释了在垂直管中排放膜的复杂流体动力学.
  • 提供了关于薄膜稳定性,合并和破裂过程的见解.
  • 适用于诸如落膜蒸发器,涂层流动和毛细血管-惯性不稳定性等应用.