Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8786
Type: Artigo
Title: LDA and PIV characterization of the flow in a hydrocyclone without an air-core
Author(s)/Inventor(s): Marins, Luiz Philipe Martinez
Duarte, Daniel Greco
Loureiro, Juliana Braga Rodrigues
Moraes, Carlos Alberto Capela
Freire, Atila Pantaleão Silva
Abstract: Indisponível.
Abstract: The three-dimensional flow in a hydrocyclone especially developed for application in the petroleum industry has been investigated through the LDA and PIV techniques for one experimental condition. In the present physical simulation, the hydrocyclone is set to operate without an air-core. The tangential (Vθ) and axial (Vz) mean velocity profiles are analyzed through both measuring techniques. Radial (Vr) mean velocity profiles are only accounted for through PIV. The exponent n in the tangential velocity equation, Vθrn = C, was determined to be about 0.61. For the radial profile, Vrrm = − D, m was found to be 1.59. The rms-values of two-velocity components — tangential and axial — were evaluated via LDA. Turbulence in the axial direction is observed to be slightly higher than turbulence in the tangential direction. Approaching the axis of symmetry of the cyclone, however, this trend is reversed. The fluctuations in the tangential direction are found to be at least twice higher than the axial fluctuations.
Keywords: Hydrocyclone
LDA
PIV
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Elsevier
In: Journal of Petroleum Science and Engineering
Volume: 70
Issue: 3-4
Issue Date: 3-Dec-2009
DOI: 10.1016/j.petrol.2009.11.006
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 0920-4105
Appears in Collections:Engenharias

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