Numerical simulation of laminar flow of water-based magneto-rheological fluids in microtubes with wall roughness effect

Tahsin Engin*, Cahit Evrensel, Faramarz Gordaninejad

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Özet

Fully developed laminar flows of water-based magneto-rheological (MR) fluids in microtubes at various Reynolds and Hedsrom numbers have been numerically simulated using finite difference method. The Bingham plastic constitutive model has been used to represent the flow behavior of MR fluids. The combined effects of wall roughness and shear yield stress on the flow characteristics of MR fluids, which are considered to be homogeneous by assuming the small particles with low concentration in the water, through microtubes have been numerically investigated. The effect of wall roughness on the flow behavior has been taken into account by incorporating a roughness-viscosity model based on the variation of the MR fluid apparent viscosity across the tube. Significant departures from the conventional laminar flow theory have been acquired for the microtube flows considered.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1016-1025
Sayfa sayısı10
DergiInternational Communications in Heat and Mass Transfer
Hacim32
Basın numarası8
DOI'lar
Yayın durumuYayınlandı - Ağu 2005
Harici olarak yayınlandıEvet

Finansman

The first author has been supported by The Scientific and Research Council of Turkey (TUBITAK) to conduct this research under NATO B1 international scholarship program. TUBITAK's support is gratefully acknowledged.

FinansörlerFinansör numarası
Scientific and Research Council of Turkey
TUBITAK
North Atlantic Treaty Organization

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