Heat transfer in laminar flow of a yield-pseudoplastic fluid over an axisymmetric sudden expansion

Khaled J. Hammad, George C. Vradis

Research output: Contribution to journalArticlepeer-review

Abstract

The present study concentrates on the temperature field and corresponding heat transfer characteristics associated with the steady flow of a non-Newtonian yield-pseudoplastic fluid (Herschel-Bulkley fluid) over an axisymmetric sudden expansion. The governing continuity and fully elliptic momentum and energy equations are solved for various yield and Prandtl numbers, and power-law exponents in the laminar flow regime with constant fluid properties. The results establish the yield number as a parameter greatly affecting the Nusselt number distribution In addition, viscous heating is shown to significantly alter the Nusselt number distribution resulting in higher heat transfer rates.

Original languageEnglish (US)
Pages (from-to)161-166
Number of pages6
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume357
Issue number2
StatePublished - 1998

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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