Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Plane Potential Flows01:23

Plane Potential Flows

842
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
842
Capillarity in Fluid01:19

Capillarity in Fluid

773
Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
773
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

762
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.
762
Irrotational Flow01:28

Irrotational Flow

905
Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
905
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

3.6K
The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
3.6K
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

649
Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
649

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Distinct H3K27 Methylation States Drive Cellular Responses to the Histone Demethylase Inhibitor GSK-J4 in Ovarian Cancer Cells.

Molecular cancer therapeutics·2026
Same author

Distinct H3K27 methylation states drive cellular responses to the histone demethylase inhibitor GSK-J4 in ovarian cancer cells.

Molecular cancer therapeutics·2026
Same author

Amniotic fluid-derived mesenchymal stem cells as a therapeutic tool against cytokine storm: a comparison with umbilical cord counterparts.

Stem cell research & therapy·2025
Same author

Cisplatin resistance alters ovarian cancer spheroid formation and impacts peritoneal invasion.

Frontiers in cell and developmental biology·2025
Same author

Corrigendum: Homeobox regulator Wilms Tumour 1 is displaced by androgen receptor at cis-regulatory elements in the endometrium of PCOS patients.

Frontiers in endocrinology·2024
Same author

Homeobox regulator Wilms Tumour 1 is displaced by androgen receptor at cis-regulatory elements in the endometrium of PCOS patients.

Frontiers in endocrinology·2024

相关实验视频

Updated: Jan 10, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.9K

在流体驱动的颗粒流中形成虫洞.

Miles L Morgan1, David W James1, Martin Monloubou2

  • 1Complex Fluids Research Group, Department of Chemical Engineering, Swansea University, Swansea, UK.

Communications physics
|November 27, 2025
PubMed
概括
此摘要是机器生成的。

通过密集的颗粒物质流动的流体可以创建类似虫洞的通道,绕过散装材料. 当引力驱动的流动不能供应流体辅助区域时,这种不稳定性就会出现,从而影响工业和自然过程.

关键词:
应用物理学的应用物理学流体动力学 流体动力学软材料 软材料 软材料

更多相关视频

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
09:37

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole

Published on: August 26, 2019

6.1K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

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

Published on: February 22, 2018

9.1K

相关实验视频

Last Updated: Jan 10, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

8.9K
Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
09:37

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole

Published on: August 26, 2019

6.1K
Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

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

Published on: February 22, 2018

9.1K

科学领域:

  • 地质物理学 地质物理学
  • 流体动力学 流体动力学
  • 材料科学 材料科学 材料科学

背景情况:

  • 流体驱动的颗粒流表现出复杂的行为和不稳定性.
  • 纵向流体通过密集的沉积粒流动并未得到充分理解.
  • Silo 流动力学在各种工业和自然环境中至关重要.

研究的目的:

  • 为了研究一个沉浸在水中的液体驱动筒仓的行为,其中有密集的沉积粒.
  • 识别和描述新出现的不稳定性和流动模式.
  • 开发流体-颗粒相互作用的预测模型.

主要方法:

  • 对一个水下流体驱动筒仓的实验研究.
  • 观察不同的流动模式,包括指纹,多孔流和通道形成.
  • 开发经验模型来预测不稳定的开始.

主要成果:

  • 观察到多样化的行为:指纹,多孔流,经典的筒子流和类似虫洞的通道.
  • 虫洞通道迅速传播到出口,绕过主要的颗粒包装.
  • 不稳定的开始与流体辅助区域的不足引力驱动供应有关.

结论:

  • 虫洞通道的形成是流体驱动的密集颗粒流中的关键不稳定性.
  • 一个模型平衡流量组件预测基于谷粒大小和流速的通道出现.
  • 研究结果为在自然灾害和工业过程中管理流体-颗粒相互作用提供了一个框架.