The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model

I. E. Garduño; H. R. Tamaddon-Jahromi; K. Walters; M. F. Webster

doi:10.1016/j.jnnfm.2015.12.004

The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model

I. E. Garduño, H. R. Tamaddon-Jahromi, K. Walters, M. F. Webster

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Prifysgol Abertawe | Swansea University

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

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Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an ‘inertial’ secondary flow near the rotating sphere to the well-understood ‘slow-flow’ features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of ‘slow-flow’, we show that it is possible to predict numerically the inertial vortex observed by Giesekus.

Iaith wreiddiol	Saesneg
Tudalennau (o-i)	27-36
Cyfnodolyn	Journal of Non-Newtonian Fluid Mechanics
Cyfrol	233
Dyddiad ar-lein cynnar	31 Rhag 2015
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.1016/j.jnnfm.2015.12.004
Statws	Cyhoeddwyd - 01 Gorff 2016

Mynediad at Ddogfen

10.1016/j.jnnfm.2015.12.004

Cysylltiad parhaol

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Ffeiliau eraill a chysylltiadau

http://hdl.handle.net/2160/43616

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title = "The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model",

abstract = "Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an {\textquoteleft}inertial{\textquoteright} secondary flow near the rotating sphere to the well-understood {\textquoteleft}slow-flow{\textquoteright} features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of {\textquoteleft}slow-flow{\textquoteright}, we show that it is possible to predict numerically the inertial vortex observed by Giesekus.",

keywords = "rotating sphere, secondary flow field, Giesekus inertial vortex, hybrid finite element/finite volume scheme, PTT model",

author = "Gardu{\~n}o, {I. E.} and Tamaddon-Jahromi, {H. R.} and K. Walters and Webster, {M. F.}",

year = "2016",

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doi = "10.1016/j.jnnfm.2015.12.004",

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pages = "27--36",

journal = "Journal of Non-Newtonian Fluid Mechanics",

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T1 - The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model

AU - Garduño, I. E.

AU - Tamaddon-Jahromi, H. R.

AU - Walters, K.

AU - Webster, M. F.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an ‘inertial’ secondary flow near the rotating sphere to the well-understood ‘slow-flow’ features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of ‘slow-flow’, we show that it is possible to predict numerically the inertial vortex observed by Giesekus.

AB - Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an ‘inertial’ secondary flow near the rotating sphere to the well-understood ‘slow-flow’ features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of ‘slow-flow’, we show that it is possible to predict numerically the inertial vortex observed by Giesekus.

KW - rotating sphere

KW - secondary flow field

KW - Giesekus inertial vortex

KW - hybrid finite element/finite volume scheme

KW - PTT model

UR - http://hdl.handle.net/2160/43616

U2 - 10.1016/j.jnnfm.2015.12.004

DO - 10.1016/j.jnnfm.2015.12.004

M3 - Article

SN - 0377-0257

VL - 233

SP - 27

EP - 36

JO - Journal of Non-Newtonian Fluid Mechanics

JF - Journal of Non-Newtonian Fluid Mechanics

ER -

The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model

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