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Related Concept Videos

Typical Model Studies01:30

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
Fluid Mosaic Model01:34

Fluid Mosaic Model

The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.LipidsThe most...
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.

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Related Experiment Video

Updated: Jul 2, 2026

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
10:12

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

Microchannel emulsification: from computational fluid dynamics to predictive analytical model.

Koen C van Dijke1, Karin C P G H Schroën, Remko M Boom

  • 1Food and Bioprocess Engineering Group, Wageningen University, Wageningen, The Netherlands.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 16, 2008
PubMed
Summary
This summary is machine-generated.

Researchers studied emulsion droplet formation in microchannels using high-speed imaging and computational fluid dynamics (CFD). They developed an analytical model to predict droplet diameter based on pressure, aiding process optimization.

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Microfluidic Model to Mimic Initial Event of Neovascularization
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Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
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Published on: June 12, 2015

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Area of Science:

  • Microfluidics and Droplet Generation
  • Interfacial Phenomena and Fluid Dynamics

Background:

  • Microchannel systems are increasingly used for controlled droplet generation.
  • Spontaneous snap-off driven by Laplace pressure is a key mechanism in microfluidic droplet formation.

Purpose of the Study:

  • To investigate the mechanism of emulsion droplet formation in terrace-based microchannels.
  • To develop an analytical model for predicting droplet diameter based on process parameters and channel geometry.

Main Methods:

  • High-speed imaging to visualize droplet formation dynamics.
  • Computational fluid dynamics (CFD) simulations to model fluid behavior.
  • Derivation of an analytical model based on simulation insights.

Main Results:

  • Good agreement was found between experimental observations and CFD simulations regarding phase shapes during droplet formation.
  • An analytical model was successfully developed, relating droplet diameter to applied pressure.
  • The model effectively incorporates the influence of process parameters and terrace geometry.

Conclusions:

  • The study elucidates the droplet formation mechanism in terrace-based microchannels.
  • The derived analytical model provides a valuable tool for rapid optimization and evaluation of microfluidic droplet generation systems.