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相关概念视频

Fluid Pressure over Flat Plate of Constant Width01:05

Fluid Pressure over Flat Plate of Constant Width

1.5K
When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
1.5K
Fluid Pressure over Flat Plate of Variable Width01:02

Fluid Pressure over Flat Plate of Variable Width

1.3K
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.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
1.3K
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

121
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.
121
Electric Field of Parallel Conducting Plates01:16

Electric Field of Parallel Conducting Plates

862
Gauss' law relates the electric flux through a closed surface to the net charge enclosed by that surface. Gauss's law can be applied to find the electric field and the charge enclosed in a region depending on its charge distribution.
Consider a cross-section of a thin, infinite conducting plate having a positive charge. For such a large thin plate, as the thickness of the plate tends to zero, the positive charges lie on the plate's two large faces. Without an external electric...
862
Fluid Pressure over Curved Plate of Constant Width01:12

Fluid Pressure over Curved Plate of Constant Width

1.1K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.1K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

933
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
933

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相关实验视频

Updated: May 27, 2025

Conducting Elevated Temperature Normal and Combined Pressure-Shear Plate Impact Experiments Via a Breech-end Sabot Heater System
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Conducting Elevated Temperature Normal and Combined Pressure-Shear Plate Impact Experiments Via a Breech-end Sabot Heater System

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发生时有多孔板块.

Chandan Bose1,2, Callum Bruce1, Ignazio Maria Viola1

  • 1School of Engineering, Institute for Energy Systems, University of Edinburgh, Edinburgh, EH9 3FB UK.

Theoretical and computational fluid dynamics
|February 17, 2025
PubMed
概括
此摘要是机器生成的。

透性显著改变了矩形板周围的流体流动. 提高透率 (达西数) 通常会降低力,但可以在特定范围内增加板式力,影响剪切层.

关键词:
达西 布林克曼 福克海默方程直接进行数值模拟.冲动理论是一种冲动理论.有平方截面的无限圆柱体.穿透性板材是可以穿透的

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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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相关实验视频

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Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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科学领域:

  • 流体动力学 流体动力学
  • 计算流体动力学的流体动力学.
  • 水力动力学是指水力动力学.

背景情况:

  • 了解物体周围的流体流动力学在各种工程应用中至关重要.
  • 对象透度对流动拓和力的影响不太清楚,特别是对于二维矩形板.

研究的目的:

  • 为了研究通过达西数 (Da) 量化的透度对流动拓和作用于二维矩形板上的力的影响.
  • 分析雷诺兹数 (Re) 和流量发生率的范围内的唤醒行为,动力学和力系数 (升力,阻力,扭矩).

主要方法:

  • 对30到90之间的雷诺兹数 (Re) 进行了数值模拟.
  • 这项研究系统地改变了达西数 (Da) 和流量发生角度 ().

主要成果:

  • 对于所有达西数和流量事件来说,尾声保持稳定.
  • 达西数 (Da) 的增加会改变旋双极结构,缩短并最终在关键的Da时消灭它.
  • 提升力,阻力和扭矩通常随着Da的增加而减少,尽管板式力可以在特定的Da和发生范围增加.

结论:

  • 透性在决定透板上的流量分离,动力学和力产生方面发挥着至关重要的作用.
  • 这些发现提供了关于阻力和起重减小机制的见解,这些机制与切削层随着透率的增加而减弱有关.
  • 这项研究对于设计和分析流体流中的小型透体具有价值.