Journal ArticleDOI
A parametric study of droplet deformation through a microfluidic contraction: Low viscosity Newtonian droplets
TLDR
In this article, numerical simulations were conducted to investigate how a droplet of a higher viscosity Newtonian liquid behaves when passing through an axisymmetric microfluidic contraction.About:
This article is published in Chemical Engineering Science.The article was published on 2006-08-01. It has received 48 citations till now. The article focuses on the topics: Viscosity & Volume viscosity.read more
Citations
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Droplet based microfluidics
TL;DR: This paper will review available drop generation and manipulation techniques in droplet based microfluidics to identify and shed light on similarities and underlying physical principles.
Journal ArticleDOI
Microfluidic methods for generating continuous droplet streams
TL;DR: In this article, a review of microfluidic methods for synthesizing uniform streams of droplets and bubbles, focusing on those that utilize pressure-driven flows, is presented, and the results in the context of physical mechanisms for droplet breakup and simple theoretical models that have been proposed.
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Numerical modeling of multiphase flows in microfluidics and micro process engineering: a review of methods and applications
TL;DR: A comprehensive review of numerical methods and models for interface resolving simulations of multiphase flows in microfluidics and micro process engineering is presented in this paper, where three common approaches in the sharp interface limit, namely the volume-of-fluid method with interface reconstruction, the level set method and the front tracking method, as well as methods with finite interface thickness such as color function based methods and the phase-field method are discussed.
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A boundary-integral model for drop deformation between two parallel plates with non-unit viscosity ratio drops
TL;DR: A boundary-integral method is presented for drop deformation between two parallel walls for non-unit viscosity ratio systems, and an excellent match with small-deformation theory is found at low capillary numbers, and the results match with other BIM simulations for pressure-driven flows.
Journal ArticleDOI
Deformation of a viscoelastic droplet passing through a microfluidic contraction
TL;DR: In this article, a computational fluid dynamics algorithm that uses a volume of fluid method to model immiscible phase behaviour is adapted to simulate the flow of viscoelastic fluids.
References
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Journal ArticleDOI
A continuum method for modeling surface tension
TL;DR: In this paper, a force density proportional to the surface curvature of constant color is defined at each point in the transition region; this force-density is normalized in such a way that the conventional description of surface tension on an interface is recovered when the ratio of local transition-reion thickness to local curvature radius approaches zero.
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Microfluidics: Fluid physics at the nanoliter scale
Todd M. Squires,Stephen R. Quake +1 more
TL;DR: A review of the physics of small volumes (nanoliters) of fluids is presented, as parametrized by a series of dimensionless numbers expressing the relative importance of various physical phenomena as mentioned in this paper.
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Engineering flows in small devices
TL;DR: An overview of flows in microdevices with focus on electrokinetics, mixing and dispersion, and multiphase flows is provided, highlighting topics important for the description of the fluid dynamics: driving forces, geometry, and the chemical characteristics of surfaces.
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Formation of dispersions using “flow focusing” in microchannels
TL;DR: In this paper, a flow-focusing geometry is integrated into a microfluidic device and used to study drop formation in liquid-liquid systems, where both monodisperse and polydisperse emulsions can be produced.
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Nonlinear dynamics and breakup of free-surface flows
TL;DR: In this article, the authors review the theoretical development of this field alongside recent experimental work, and outline unsolved problems, as well as a host of technological applications, ranging from printing to mixing and fiber spinning.