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Pseudoplastic fluid flows for different Prandtl numbers: steady and time-dependent solutions

Author
Aguirre, A.; Castillo, E.; Cruchaga, M. A.; Codina, R.; Baiges, J.
Type of activity
Journal article
Journal
International journal of thermal sciences
Date of publication
2019-11
Volume
145
First page
106022-1
Last page
106022-17
DOI
10.1016/j.ijthermalsci.2019.106022
Repository
http://hdl.handle.net/2117/167057 Open in new window
https://www.researchgate.net/publication/334549699_Pseudoplastic_fluid_flows_for_different_Prandtl_numbers_steady_and_time-dependent_solutions Open in new window
URL
https://www.sciencedirect.com/science/article/pii/S1290072918321380 Open in new window
Abstract
In this work, a variational multiscale (VMS) finite element formulation is used to approximate numerically the natural convection in square cavity with differentially heated from sidewalls problem for Newtonian and power-law fluids. The problem is characterized for going through a Hopf bifurcation when reaching high enough Rayleigh numbers, which initiates the transition between steady and time dependent behavior, however, results found in the literature are only for air Prandtl number. The pres...
Citation
Aguirre, A. [et al.]. Pseudoplastic fluid flows for different Prandtl numbers: steady and time-dependent solutions. "International journal of thermal sciences", Novembre 2019, vol. 145, p. 106022-1-106022-17.
Keywords
Heat exchanger, High Rayleigh numbers, Hopf bifurcation, Natural convection, Power-law fluid, Stabilized finite element method
Group of research
(MC)2 - UPC Computational continuum mechanics
ANiComp - Numerical analysis and scientific computation

Participants