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Related Concept Videos

Capillarity in Fluid01:19

Capillarity in Fluid

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

Steady, Laminar Flow Between Parallel Plates

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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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Fluid Pressure over Curved Plate of Constant Width01:12

Fluid Pressure over Curved Plate of Constant Width

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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...
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Pressure of Fluids01:14

Pressure of Fluids

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There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
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Excess Pressure Inside a Drop and a Bubble01:13

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The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
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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.
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Updated: Jan 18, 2026

A Microfluidic Platform to Study Bioclogging in Porous Media
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Three-Dimensional Bubble Fluidics in Architected Porous Media.

Jonathan T Davis1, Kansas Seung1, Anna Guell Izard1

  • 1Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, California 94551, United States.

ACS Applied Materials & Interfaces
|September 11, 2025
PubMed
Summary
This summary is machine-generated.

Researchers demonstrate 3D printed porous structures for deterministic control of gas-liquid flows. This innovation enables precise management of multiphase fluid dynamics in engineered systems.

Keywords:
3D microfluidics3D printingbubblescapillary transportgas exchangelogic gatemultiphase flowsporous materials

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Area of Science:

  • Fluid Dynamics
  • Materials Science
  • Chemical Engineering

Background:

  • Gas bubble flows in porous media are complex and difficult to control, hindering the design of effective multiphase flow devices.
  • Current methods lack deterministic control over gas-liquid interfaces within porous materials.

Purpose of the Study:

  • To demonstrate how 3D printed pore designs can deterministically control gas stream flow paths.
  • To explore the use of shaped gas/liquid interfaces for controlled phase distribution.
  • To leverage controlled gas-liquid interactions for applications like logical control gates and optimized bioreactors.

Main Methods:

  • Designing and fabricating custom open cell porous structures using 3D printing.
  • Investigating the shaping of gas/liquid interfaces within these engineered pores.
  • Exploiting the controlled distribution of gas for physical and chemical interactions.

Main Results:

  • 3D printed pore designs enable deterministic control over gas flow paths.
  • Engineered pore architectures effectively shape the gas/liquid interface, controlling phase distribution.
  • Demonstrated use of controlled gas-liquid interactions to create a logical control gate for flow redirection.
  • Showcased potential for designing reactive capture and aerating bioreactor architectures.

Conclusions:

  • 3D printed porous media offer a novel approach to precisely control multiphase flows.
  • Engineered pore geometries provide a platform for advanced fluid management and chemical/physical process intensification.
  • This method facilitates the development of sophisticated devices for applications in chemical processing and biotechnology.