Non-Newtonian flow behaviour in narrow annular gap reactors
Document Type
Article
Publication Date
6-18-2001
Abstract
In this paper local flow investigations under isothermal conditions have been established for a narrow annular gap reactor (NAGR, given by a rotor/stator system with a radius ratio of ri/ro=0.8) including two wall scraper blades of different geometry. Two-dimensional laminar flow fields are considered (with Reynolds numbers below Re < 82.6), based on numerical flow simulations, where validations with experimental velocity measurements are in good agreement. Comparisons of the macroscopic flow structuring behaviour are shown for Newtonian and inelastic shear-thinning fluids based on velocity profiles, secondary flows, hydrodynamic pressure contours, shear stress and energy dissipation, by varying the rotor velocity (described in terms of a characteristic rotational Reynolds number Re), the scraper blade angle (β) and the non-Newtonian flow behaviour (power-law exponent n). © 2001 Elsevier Science Ltd. All rights reserved.
Publication Title
Chemical Engineering Science
Recommended Citation
Stranzinger, M.,
Feigl, K.,
&
Windhab, E.
(2001).
Non-Newtonian flow behaviour in narrow annular gap reactors.
Chemical Engineering Science,
56(11), 3347-3363.
http://doi.org/10.1016/S0009-2509(01)00039-2
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/7247