### Abstract

The hydrodynamic as well as the thermal fields associated with Couette flow of a non-Newtonian yield-pseudoplastic fluid between two concentric cylinders are numerically investigated. The considered problem consists of a rotating, solid, inner cylinder in a fixed hollow outer cylinder. The outer surface of the inner cylinder is assumed to be adiabatic, while the hollow one is considered to have a constant temperature. The investigated thermal field is developed due to the viscous heating phenomenon associated with tangential flows of such high apparent viscosity fluids when subjected to intense shear. The results reveal the profound effect of the governing parameters on the temperature field and the corresponding Nusselt number distributions. The geometry as well the boundary conditions simulate the widely used controlled shearing rate concentric cylinders rheometer. While the developed hydrodynamic and thermal fields are due to a fixed outer and rotating inner cylinders, they would be identical, in the presented form, to those corresponding to a fixed inner and rotating outer cylinders.

Original language | English (US) |
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Title of host publication | Developments and Applications of Non-Newtonian Flows |

Publisher | ASME |

Pages | 245-251 |

Number of pages | 7 |

Volume | 231 |

State | Published - 1995 |

Event | Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition - San Francisco, CA, USA Duration: Nov 12 1995 → Nov 17 1995 |

### Other

Other | Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition |
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City | San Francisco, CA, USA |

Period | 11/12/95 → 11/17/95 |

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### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*Developments and Applications of Non-Newtonian Flows*(Vol. 231, pp. 245-251). ASME.

**Non-isothermal controlled shearing rate rheometry of a yield-pseudoplastic fluid : effects of shear heating.** / Hammad, Khaled J.; Vradis, George.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Developments and Applications of Non-Newtonian Flows.*vol. 231, ASME, pp. 245-251, Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition, San Francisco, CA, USA, 11/12/95.

}

TY - GEN

T1 - Non-isothermal controlled shearing rate rheometry of a yield-pseudoplastic fluid

T2 - effects of shear heating

AU - Hammad, Khaled J.

AU - Vradis, George

PY - 1995

Y1 - 1995

N2 - The hydrodynamic as well as the thermal fields associated with Couette flow of a non-Newtonian yield-pseudoplastic fluid between two concentric cylinders are numerically investigated. The considered problem consists of a rotating, solid, inner cylinder in a fixed hollow outer cylinder. The outer surface of the inner cylinder is assumed to be adiabatic, while the hollow one is considered to have a constant temperature. The investigated thermal field is developed due to the viscous heating phenomenon associated with tangential flows of such high apparent viscosity fluids when subjected to intense shear. The results reveal the profound effect of the governing parameters on the temperature field and the corresponding Nusselt number distributions. The geometry as well the boundary conditions simulate the widely used controlled shearing rate concentric cylinders rheometer. While the developed hydrodynamic and thermal fields are due to a fixed outer and rotating inner cylinders, they would be identical, in the presented form, to those corresponding to a fixed inner and rotating outer cylinders.

AB - The hydrodynamic as well as the thermal fields associated with Couette flow of a non-Newtonian yield-pseudoplastic fluid between two concentric cylinders are numerically investigated. The considered problem consists of a rotating, solid, inner cylinder in a fixed hollow outer cylinder. The outer surface of the inner cylinder is assumed to be adiabatic, while the hollow one is considered to have a constant temperature. The investigated thermal field is developed due to the viscous heating phenomenon associated with tangential flows of such high apparent viscosity fluids when subjected to intense shear. The results reveal the profound effect of the governing parameters on the temperature field and the corresponding Nusselt number distributions. The geometry as well the boundary conditions simulate the widely used controlled shearing rate concentric cylinders rheometer. While the developed hydrodynamic and thermal fields are due to a fixed outer and rotating inner cylinders, they would be identical, in the presented form, to those corresponding to a fixed inner and rotating outer cylinders.

UR - http://www.scopus.com/inward/record.url?scp=0029425538&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029425538&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0029425538

VL - 231

SP - 245

EP - 251

BT - Developments and Applications of Non-Newtonian Flows

PB - ASME

ER -