Numerical investigation of liquid flow with phase change nanoparticles in microchannels

Awad B.S. Alquaity; Salem A. Al-Dini; Evelyn N. Wang; Bekir S. Yilbas

doi:10.1016/j.ijheatfluidflow.2012.10.001

Numerical investigation of liquid flow with phase change nanoparticles in microchannels

Awad B.S. Alquaity, Salem A. Al-Dini, Evelyn N. Wang, Bekir S. Yilbas^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

A numerical solution is introduced to investigate the effect of laminar flow with a suspension of phase change material nanoparticles (PCMs) in a microchannel. The nanoparticle suspension consisting of lauric acid nanoparticles in water is introduced into a microchannel of 50μm height and 35mm length, where a constant heat flux is applied to the bottom wall. Mass, momentum and energy equations are solved simultaneously using a fluid with effective thermo-physical properties. The effect of various parameters including mass flow rate (1×10^-5-4×10^-5kg/s), heat flux (8000-20,000W/m²) and particle volume concentrations (0-10%) on the thermal performance is investigated using effectiveness ratio, performance index, and Merit number. The study is extended to include the optimum channel length for improved thermal performance. For a given particle concentration, an optimum heat flux to mass flow rate ratio exists that leads to the maximum effectiveness ratio of 2.75, performance index of 1.37 and Merit number of 0.64. Such a study facilitates understanding the parametric space to optimize heat transfer in microchannels for applications such as thermal management and energy conversion devices.

Original language	English
Pages (from-to)	159-167
Number of pages	9
Journal	INT. J. HEAT & FLUID FLOW
Volume	38
DOIs	https://doi.org/10.1016/j.ijheatfluidflow.2012.10.001
State	Published - Dec 2012

Bibliographical note

Funding Information:
The authors acknowledge the support of Center of Excellence for Scientific Research Collaboration with MIT and King Fahd University of Petroleum and Minerals. Dhahran, Saudi Arabia for this work.

Keywords

Laminar flow
Microchannel
Nanoparticles
Phase change material

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatfluidflow.2012.10.001

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title = "Numerical investigation of liquid flow with phase change nanoparticles in microchannels",

abstract = "A numerical solution is introduced to investigate the effect of laminar flow with a suspension of phase change material nanoparticles (PCMs) in a microchannel. The nanoparticle suspension consisting of lauric acid nanoparticles in water is introduced into a microchannel of 50μm height and 35mm length, where a constant heat flux is applied to the bottom wall. Mass, momentum and energy equations are solved simultaneously using a fluid with effective thermo-physical properties. The effect of various parameters including mass flow rate (1×10-5-4×10-5kg/s), heat flux (8000-20,000W/m2) and particle volume concentrations (0-10%) on the thermal performance is investigated using effectiveness ratio, performance index, and Merit number. The study is extended to include the optimum channel length for improved thermal performance. For a given particle concentration, an optimum heat flux to mass flow rate ratio exists that leads to the maximum effectiveness ratio of 2.75, performance index of 1.37 and Merit number of 0.64. Such a study facilitates understanding the parametric space to optimize heat transfer in microchannels for applications such as thermal management and energy conversion devices.",

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author = "Alquaity, {Awad B.S.} and Al-Dini, {Salem A.} and Wang, {Evelyn N.} and Yilbas, {Bekir S.}",

note = "Funding Information: The authors acknowledge the support of Center of Excellence for Scientific Research Collaboration with MIT and King Fahd University of Petroleum and Minerals. Dhahran, Saudi Arabia for this work.",

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AU - Alquaity, Awad B.S.

AU - Al-Dini, Salem A.

AU - Wang, Evelyn N.

AU - Yilbas, Bekir S.

N1 - Funding Information: The authors acknowledge the support of Center of Excellence for Scientific Research Collaboration with MIT and King Fahd University of Petroleum and Minerals. Dhahran, Saudi Arabia for this work.

PY - 2012/12

Y1 - 2012/12

N2 - A numerical solution is introduced to investigate the effect of laminar flow with a suspension of phase change material nanoparticles (PCMs) in a microchannel. The nanoparticle suspension consisting of lauric acid nanoparticles in water is introduced into a microchannel of 50μm height and 35mm length, where a constant heat flux is applied to the bottom wall. Mass, momentum and energy equations are solved simultaneously using a fluid with effective thermo-physical properties. The effect of various parameters including mass flow rate (1×10-5-4×10-5kg/s), heat flux (8000-20,000W/m2) and particle volume concentrations (0-10%) on the thermal performance is investigated using effectiveness ratio, performance index, and Merit number. The study is extended to include the optimum channel length for improved thermal performance. For a given particle concentration, an optimum heat flux to mass flow rate ratio exists that leads to the maximum effectiveness ratio of 2.75, performance index of 1.37 and Merit number of 0.64. Such a study facilitates understanding the parametric space to optimize heat transfer in microchannels for applications such as thermal management and energy conversion devices.

AB - A numerical solution is introduced to investigate the effect of laminar flow with a suspension of phase change material nanoparticles (PCMs) in a microchannel. The nanoparticle suspension consisting of lauric acid nanoparticles in water is introduced into a microchannel of 50μm height and 35mm length, where a constant heat flux is applied to the bottom wall. Mass, momentum and energy equations are solved simultaneously using a fluid with effective thermo-physical properties. The effect of various parameters including mass flow rate (1×10-5-4×10-5kg/s), heat flux (8000-20,000W/m2) and particle volume concentrations (0-10%) on the thermal performance is investigated using effectiveness ratio, performance index, and Merit number. The study is extended to include the optimum channel length for improved thermal performance. For a given particle concentration, an optimum heat flux to mass flow rate ratio exists that leads to the maximum effectiveness ratio of 2.75, performance index of 1.37 and Merit number of 0.64. Such a study facilitates understanding the parametric space to optimize heat transfer in microchannels for applications such as thermal management and energy conversion devices.

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KW - Phase change material

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Numerical investigation of liquid flow with phase change nanoparticles in microchannels

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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