Effect of wall roughness on laminar flow of bingham plastic fluids through microtubes

Tahsin Engin; Umit Dogruer; Cahit Evrensel; Scott Heavin; Faramarz Gordaninejad

doi:10.1115/1.1792252

Effect of wall roughness on laminar flow of bingham plastic fluids through microtubes

Tahsin Engin^*, Umit Dogruer, Cahit Evrensel, Scott Heavin, Faramarz Gordaninejad

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

The flow characteristics of liquids modeled by the Bingham plastic constitutive relation through microtubes were numerically studied. The wall roughness effect in a microtube was characterized by using a roughness-viscosity model. The model was used to modify the laminar Bingham plastic flow equations in microtubes by introducing a location dependent apparent viscosity. The results show that the flow friction in microtubes is considerably larger than the predictions of the conventional theory based on uniform viscosity.

Original language	English
Pages (from-to)	880-883
Number of pages	4
Journal	Journal of Fluids Engineering, Transactions of the ASME
Volume	126
Issue number	5
DOIs	https://doi.org/10.1115/1.1792252
Publication status	Published - Sept 2004
Externally published	Yes

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abstract = "The flow characteristics of liquids modeled by the Bingham plastic constitutive relation through microtubes were numerically studied. The wall roughness effect in a microtube was characterized by using a roughness-viscosity model. The model was used to modify the laminar Bingham plastic flow equations in microtubes by introducing a location dependent apparent viscosity. The results show that the flow friction in microtubes is considerably larger than the predictions of the conventional theory based on uniform viscosity.",

author = "Tahsin Engin and Umit Dogruer and Cahit Evrensel and Scott Heavin and Faramarz Gordaninejad",

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AU - Engin, Tahsin

AU - Dogruer, Umit

AU - Evrensel, Cahit

AU - Heavin, Scott

AU - Gordaninejad, Faramarz

PY - 2004/9

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AB - The flow characteristics of liquids modeled by the Bingham plastic constitutive relation through microtubes were numerically studied. The wall roughness effect in a microtube was characterized by using a roughness-viscosity model. The model was used to modify the laminar Bingham plastic flow equations in microtubes by introducing a location dependent apparent viscosity. The results show that the flow friction in microtubes is considerably larger than the predictions of the conventional theory based on uniform viscosity.

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Effect of wall roughness on laminar flow of bingham plastic fluids through microtubes

Abstract

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