Numerical study of fully developed non-Newtonian fluid flow and heat transfer in a rectangular channel with a moving wall

Seppo Syrjälä

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Flow and heat transfer characteristics in a rectangular channel covered by an isothermally heated moving wall were studied for a non-Newtonian fluid obeying the power-law relationship under fully developed creeping flow conditions. The governing partial differential equations were solved using the finite element method together with a penalty formulation. A practical application behind the present study is the screw extrusion process. Several simplifications were, however, introduced into the analysis, and therefore the primary purpose of this study is not to characterize the flow and heat transfer in the actual screw extruder, but to present a first effort towards this goal. The most interesting result revealed by the analysis is that the recirculatory motion set up by the diagonally moving top wall has a pronounced influence on the heat transfer.

Original languageEnglish
Pages (from-to)11 - 25
Number of pages15
JournalInternational Communications in Heat and Mass Transfer
Volume24
Issue number1
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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fluid flow
Flow of fluids
heat transfer
screws
Heat transfer
Extruders
simplification
penalties
partial differential equations
Partial differential equations
Extrusion
finite element method
Finite element method
formulations
Fluids
fluids

Cite this

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abstract = "Flow and heat transfer characteristics in a rectangular channel covered by an isothermally heated moving wall were studied for a non-Newtonian fluid obeying the power-law relationship under fully developed creeping flow conditions. The governing partial differential equations were solved using the finite element method together with a penalty formulation. A practical application behind the present study is the screw extrusion process. Several simplifications were, however, introduced into the analysis, and therefore the primary purpose of this study is not to characterize the flow and heat transfer in the actual screw extruder, but to present a first effort towards this goal. The most interesting result revealed by the analysis is that the recirculatory motion set up by the diagonally moving top wall has a pronounced influence on the heat transfer.",
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Numerical study of fully developed non-Newtonian fluid flow and heat transfer in a rectangular channel with a moving wall. / Syrjälä, Seppo.

In: International Communications in Heat and Mass Transfer, Vol. 24, No. 1, 1997, p. 11 - 25.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Numerical study of fully developed non-Newtonian fluid flow and heat transfer in a rectangular channel with a moving wall

AU - Syrjälä, Seppo

PY - 1997

Y1 - 1997

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AB - Flow and heat transfer characteristics in a rectangular channel covered by an isothermally heated moving wall were studied for a non-Newtonian fluid obeying the power-law relationship under fully developed creeping flow conditions. The governing partial differential equations were solved using the finite element method together with a penalty formulation. A practical application behind the present study is the screw extrusion process. Several simplifications were, however, introduced into the analysis, and therefore the primary purpose of this study is not to characterize the flow and heat transfer in the actual screw extruder, but to present a first effort towards this goal. The most interesting result revealed by the analysis is that the recirculatory motion set up by the diagonally moving top wall has a pronounced influence on the heat transfer.

U2 - 10.1016/S0735-1933(96)00102-9

DO - 10.1016/S0735-1933(96)00102-9

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JO - International Communications in Heat and Mass Transfer

JF - International Communications in Heat and Mass Transfer

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