Non-isothermal controlled shearing rate rheometry of a yield-pseudoplastic fluid: effects of shear heating

Khaled J. Hammad, George C. Vradis

Research output: Contribution to conferencePaper

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 languageEnglish (US)
Pages245-251
Number of pages7
StatePublished - Dec 1 1995
EventProceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition - San Francisco, CA, USA
Duration: Nov 12 1995Nov 17 1995

Conference

ConferenceProceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition
CitySan Francisco, CA, USA
Period11/12/9511/17/95

ASJC Scopus subject areas

  • Engineering(all)

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    Hammad, K. J., & Vradis, G. C. (1995). Non-isothermal controlled shearing rate rheometry of a yield-pseudoplastic fluid: effects of shear heating. 245-251. Paper presented at Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition, San Francisco, CA, USA, .