Heat transfer to Newtonian and non-Newtonian fluids flowing in a laminar regime

✍ Scribed by J.C. Gottifredi; O.D. Quiroga; A.F. Flores

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 461 KB
• Volume: 26
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(83)80176-8

✦ Synopsis

A new analytical approach is presented to estimate the local and mean heat flux from a wall maintainedat a given temperatureto a fluid flowing in a laminarregime. Theprocedurecan beapplied to the analysis of planeas well as cylindrical geometry configurations while the fluid behaviourcan be considered Newtonian or non-Newtonian providedthe axialvelocity distributioncan be represented by an analytical function of position. The method is simple and gives veryaccurateresults when comparedwithnumerical estimates previously presented in the literature. Anumberofcomparisons arepresented in thisworkshowing that maximum deviations are always below 3.5%in terms of mixing cup temperature. The technique is so simplethat it should be useful for the analysis ofsimilarproblems in the field of convective heat and mass transfer.

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