Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids

Konstantinos Zografos, Monica Oliveira, David Emerson, R.W. Barber

Research output: Contribution to conferencePaper

Abstract

Microfluidic bifurcating networks of rectangular cross-sectional channels are designed using a novel biomimetic rule, based on Murray’s law. Murray’s principle is extended to consider the flow of power-law fluids in planar geometries (i.e. of constant depth rectangular cross-section) typical of lab-on-a-chip applications. The proposed design offers the ability to control precisely the shear-stress distributions and to predict the flow resistance along the network. We use an in-house code to perform computational fluid dynamics simulations in order to assess the extent of the validity of the proposed design for Newtonian, shear-thinning and shear-thickening fluids under different flow conditions.

Conference

Conference4th Micro and Nano Flows Conference, MNF 2014
CountryUnited Kingdom
CityLondon
Period7/09/1410/09/14

Fingerprint

Microfluidics
Lab-on-a-chip
Fluids
Shear thinning
Biomimetics
Stress concentration
Shear stress
Computational fluid dynamics
Geometry
Computer simulation

Keywords

  • microfluidics
  • Murray's law
  • Newtonian fluid
  • power-law fluid

Cite this

Zografos, K., Oliveira, M., Emerson, D., & Barber, R. W. (2014). Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids. Paper presented at 4th Micro and Nano Flows Conference, MNF 2014, London, United Kingdom.
Zografos, Konstantinos ; Oliveira, Monica ; Emerson, David ; Barber, R.W. / Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids. Paper presented at 4th Micro and Nano Flows Conference, MNF 2014, London, United Kingdom.8 p.
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Zografos, K, Oliveira, M, Emerson, D & Barber, RW 2014, 'Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids' Paper presented at 4th Micro and Nano Flows Conference, MNF 2014, London, United Kingdom, 7/09/14 - 10/09/14, .

Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids. / Zografos, Konstantinos; Oliveira, Monica; Emerson, David; Barber, R.W.

2014. Paper presented at 4th Micro and Nano Flows Conference, MNF 2014, London, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids

AU - Zografos, Konstantinos

AU - Oliveira, Monica

AU - Emerson, David

AU - Barber, R.W.

PY - 2014/9/7

Y1 - 2014/9/7

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AB - Microfluidic bifurcating networks of rectangular cross-sectional channels are designed using a novel biomimetic rule, based on Murray’s law. Murray’s principle is extended to consider the flow of power-law fluids in planar geometries (i.e. of constant depth rectangular cross-section) typical of lab-on-a-chip applications. The proposed design offers the ability to control precisely the shear-stress distributions and to predict the flow resistance along the network. We use an in-house code to perform computational fluid dynamics simulations in order to assess the extent of the validity of the proposed design for Newtonian, shear-thinning and shear-thickening fluids under different flow conditions.

KW - microfluidics

KW - Murray's law

KW - Newtonian fluid

KW - power-law fluid

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M3 - Paper

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Zografos K, Oliveira M, Emerson D, Barber RW. Constant depth microfluidic networks based on a generalised Murry's law for Newtonian and power-law fluids. 2014. Paper presented at 4th Micro and Nano Flows Conference, MNF 2014, London, United Kingdom.