The effects of power law fluid rheology on coil heat transfer for agitated vessel in the transitional flow regime

A CFD model of heat transfer from power-law fluids to helical cooling coils in the transitional flow regime of a baffled tank mixed with a pitched blade turbine was developed with Fluentâ„¢. The-model captured local temperature and velocity gradients. Simulations were run, varying Re, Pr, K and n. The...

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Journal Title: Canadian Journal of Chemical Engineering Vol. 82; no. 6; pp. 1275 - 1283
Authors: W.J. Kelly, E. Ricci
Format: Article
Published: Dec 2004
Subjects:
CFD
Online Access: Full Text
Summary: A CFD model of heat transfer from power-law fluids to helical cooling coils in the transitional flow regime of a baffled tank mixed with a pitched blade turbine was developed with Fluentâ„¢. The-model captured local temperature and velocity gradients. Simulations were run, varying Re, Pr, K and n. The results indicate that a Sieder-Tate type correlation, with the exponent on and the coefficient in front of the Reynolds number being a function of n, is recommended for estimating ho. Also, a new two coil bank design was found to be more efficient when 450 < Re < 650.
ISSN: 00084034
DOI: 10.1002/cjce.5450820615