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相关概念视频

Accelerating Fluids01:17

Accelerating Fluids

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When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
1.0K
Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

209
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...
209
Fluid Pressure over Curved Plate of Constant Width01:12

Fluid Pressure over Curved Plate of Constant Width

1.6K
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...
1.6K
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

194
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.
194
Eulerian and Lagrangian Flow Descriptions01:22

Eulerian and Lagrangian Flow Descriptions

1.4K
Fluid flow analysis is critical in many scientific and engineering disciplines, and two principal approaches are used to describe this flow: the Eulerian and Lagrangian methods. These methods offer different perspectives on monitoring and analyzing the motion of fluids, each with distinct advantages depending on the scenario.
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
1.4K
Newtonian Fluid: Problem Solving01:18

Newtonian Fluid: Problem Solving

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Newtonian fluids exhibit a constant viscosity, meaning their shear stress and shear strain rate are directly proportional. This property ensures a predictable and stable response to applied forces, maintaining a linear relationship between force and flow. Examples include water, air, and light oils, consistently demonstrating this proportional behavior regardless of external conditions.
A velocity gradient forms within the fluid when a Newtonian fluid is placed between two parallel plates, with...
222

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Updated: Jul 4, 2025

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
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基于层次的模拟用于以球形坐标的三维流体流动.

Ruihong Cen, Bo Ren

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    此摘要是机器生成的。

    本研究介绍了一个3D球形坐标流体流动模拟器. 它处理任意地形,并为图形应用程序提供艺术控制.

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    科学领域:

    • 计算机图形 计算机图形
    • 计算物理 计算物理
    • 流体动力学 流体动力学

    背景情况:

    • 球形坐标中的流体流动在计算机图形学中越来越感兴趣.
    • 现有的研究主要涉及2D多元流,使3D模拟面临挑战.
    • 尚未解决的问题包括任意障碍的边界条件和3D球形模拟中的艺术控制.

    研究的目的:

    • 为球形领域的3D流体流动提出一个实用的模拟器.
    • 为了解决现有的3D球形坐标流体模拟的局限性.
    • 为艺术设计提供灵活的艺术控制.

    主要方法:

    • 一个层层的结构用于模拟.
    • 一个具有边界意识的压力解决方案.
    • 基于二维多重球形坐标模拟的常规.

    主要成果:

    • 顺利恢复横向和垂直流动的运动.
    • 在有限厚度的球形外内进行模拟.
    • 处理任意地形形状的能力.

    结论:

    • 拟议的方法可以在球形坐标中实现实用的3D流体流动模拟.
    • 它有效地处理复杂的地形,并提供艺术控制.
    • 它将以前的2D方法扩展到3D领域.