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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Residence Time Distribution Models Derived from Non-Ideal Laminar Velocity Profiles in Tubes

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Author(s):
Pegoraro, Paula R. [1] ; Marangoni, Mariana [1] ; Gut, Jorge A. W. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Escola Politecn, Dept Chem Engn, BR-05424970 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CHEMICAL ENGINEERING & TECHNOLOGY; v. 35, n. 9, p. 1593-1603, SEP 2012.
Web of Science Citations: 7
Abstract

The theoretical E-curve for the laminar flow of non-Newtonian fluids in circular tubes may not be accurate for real tubular systems with diffusion, mechanical vibration, wall roughness, pipe fittings, curves, coils, or corrugated walls. Deviations from the idealized laminar flow reactor (LFR) cannot be well represented using the axial dispersion or the tanks-in-series models of residence time distribution (RTD). In this work, four RTD models derived from non-ideal velocity profiles in segregated tube flow are proposed. They were used to represent the RTD of three tubular systems working with Newtonian and pseudoplastic fluids. Other RTD models were considered for comparison. The proposed models provided good adjustments, and it was possible to determine the active volumes. It is expected that these models can be useful for the analysis of LFR or for the evaluation of continuous thermal processing of viscous foods. (AU)

FAPESP's process: 09/07934-3 - Study and modeling of thermal processing in double-pipe heat exchanger
Grantee:Jorge Andrey Wilhelms Gut
Support Opportunities: Regular Research Grants