Steady-periodic heating in parallel-plate microchannel flow with participating walls

Kevin D. Cole

doi:10.1016/j.ijheatmasstransfer.2009.11.037

Steady-periodic heating in parallel-plate microchannel flow with participating walls

Kevin D. Cole

Mechanical & Materials Engineering

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

9 Scopus citations

Abstract

Simulations are presented for thermal sensing of steady laminar flow in a parallel-plate microchannel. Steady-periodic heating is introduced at the channel wall and temperatures are reported at upstream and downstream locations to represent temperature sensors. Exact analytical expressions for the temperature are given in the form of integrals, and numerical values are found by quadrature. Because axial conduction is prominent, there is a well-defined measurable flow range associated with each thermal-sensor geometry. Various fluid-flow rates, heating frequencies, sensor locations, and wall properties are explored. The results are given as a design correlation which shows the extent to which a given sensor can be tuned, by adjusting the heating frequency, to the flow-measurement range of interest.

Original language	English (US)
Pages (from-to)	870-878
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	53
Issue number	5-6
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2009.11.037
State	Published - Feb 2010

Keywords

Axial conduction
Conjugate heat transfer
Green's function
Thermal entrance

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatmasstransfer.2009.11.037

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title = "Steady-periodic heating in parallel-plate microchannel flow with participating walls",

abstract = "Simulations are presented for thermal sensing of steady laminar flow in a parallel-plate microchannel. Steady-periodic heating is introduced at the channel wall and temperatures are reported at upstream and downstream locations to represent temperature sensors. Exact analytical expressions for the temperature are given in the form of integrals, and numerical values are found by quadrature. Because axial conduction is prominent, there is a well-defined measurable flow range associated with each thermal-sensor geometry. Various fluid-flow rates, heating frequencies, sensor locations, and wall properties are explored. The results are given as a design correlation which shows the extent to which a given sensor can be tuned, by adjusting the heating frequency, to the flow-measurement range of interest.",

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N2 - Simulations are presented for thermal sensing of steady laminar flow in a parallel-plate microchannel. Steady-periodic heating is introduced at the channel wall and temperatures are reported at upstream and downstream locations to represent temperature sensors. Exact analytical expressions for the temperature are given in the form of integrals, and numerical values are found by quadrature. Because axial conduction is prominent, there is a well-defined measurable flow range associated with each thermal-sensor geometry. Various fluid-flow rates, heating frequencies, sensor locations, and wall properties are explored. The results are given as a design correlation which shows the extent to which a given sensor can be tuned, by adjusting the heating frequency, to the flow-measurement range of interest.

AB - Simulations are presented for thermal sensing of steady laminar flow in a parallel-plate microchannel. Steady-periodic heating is introduced at the channel wall and temperatures are reported at upstream and downstream locations to represent temperature sensors. Exact analytical expressions for the temperature are given in the form of integrals, and numerical values are found by quadrature. Because axial conduction is prominent, there is a well-defined measurable flow range associated with each thermal-sensor geometry. Various fluid-flow rates, heating frequencies, sensor locations, and wall properties are explored. The results are given as a design correlation which shows the extent to which a given sensor can be tuned, by adjusting the heating frequency, to the flow-measurement range of interest.

KW - Axial conduction

KW - Conjugate heat transfer

KW - Green's function

KW - Thermal entrance

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ER -

Steady-periodic heating in parallel-plate microchannel flow with participating walls

Abstract

Keywords

ASJC Scopus subject areas

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