Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
Local Flow Structure for Non-Newtonian Fluids in a Periodically Corrugated Wall Channel
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RESUMO
Experiments were carried out to characterize the local shear flow inside a periodically corrugated wall channel by use of electrochemical method giving the wall shear rate S and laser-Doppler velocimetry (LDV) for the axial velocity profiles. Both Newtonian fluids and shear-thinning viscous fluids (carboxymethyl-cellulose sodium salt (CMC) additive) are considered, flowing in a range of Reynolds numbers and generalized Reynolds numbers for non-Newtonian fluids determining the following regimes: laminar, transitional and low-Reynolds-number turbulent. Laminar flow, steady motion with a recirculating zone, transition to turbulence with unsteady vortex and three-dimensional instabilities with reducing by the onset of a developed turbulence have been detected.
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