Accurate prediction of friction factor and Nusselt number for some duct flows of power-law non-Newtonian fluids

Seppo Syrjälä

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

Using the high-order finite element method, we provide accurate predictions of the friction factor and the Nusselt number for the fully developed laminar flows of power-law-type non-Newtonian fluids in rhombic, isosceles-triangular, elliptical, and semielliptical ducts. Two kinds of thermal boundary conditions, commonly referred to as the H1 and T conditions, are considered. For each type of duct, computed results are presented for several aspect ratios with the power-law index ranging from 0.2 to 1.0. Mesh refinement tests with four different meshes are carried out for two specific duct configurations, indicating that the present predictions are remarkably insensitive to mesh density.
Original languageEnglish
Pages (from-to)89-100
JournalNumerical Heat Transfer: Part A: Applications
Volume41
Issue number1
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

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Power-law Fluid
friction factor
Non-Newtonian Fluid
Nusselt number
ducts
Ducts
Friction
Power Law
Mesh
Isosceles
High-order Finite Elements
Fluids
High-order Methods
Mesh Refinement
Prediction
mesh
fluids
Laminar Flow
predictions
Aspect Ratio

Cite this

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abstract = "Using the high-order finite element method, we provide accurate predictions of the friction factor and the Nusselt number for the fully developed laminar flows of power-law-type non-Newtonian fluids in rhombic, isosceles-triangular, elliptical, and semielliptical ducts. Two kinds of thermal boundary conditions, commonly referred to as the H1 and T conditions, are considered. For each type of duct, computed results are presented for several aspect ratios with the power-law index ranging from 0.2 to 1.0. Mesh refinement tests with four different meshes are carried out for two specific duct configurations, indicating that the present predictions are remarkably insensitive to mesh density.",
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Accurate prediction of friction factor and Nusselt number for some duct flows of power-law non-Newtonian fluids. / Syrjälä, Seppo.

In: Numerical Heat Transfer: Part A: Applications, Vol. 41, No. 1, 2002, p. 89-100.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Accurate prediction of friction factor and Nusselt number for some duct flows of power-law non-Newtonian fluids

AU - Syrjälä, Seppo

PY - 2002

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AB - Using the high-order finite element method, we provide accurate predictions of the friction factor and the Nusselt number for the fully developed laminar flows of power-law-type non-Newtonian fluids in rhombic, isosceles-triangular, elliptical, and semielliptical ducts. Two kinds of thermal boundary conditions, commonly referred to as the H1 and T conditions, are considered. For each type of duct, computed results are presented for several aspect ratios with the power-law index ranging from 0.2 to 1.0. Mesh refinement tests with four different meshes are carried out for two specific duct configurations, indicating that the present predictions are remarkably insensitive to mesh density.

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DO - 10.1080/104077802317221456

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JO - Numerical Heat Transfer: Part A: Applications

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