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Variation of spatial and temporal characteristics of reactive flow in a periodically driven cavity: Gelation of sodium acrylate
Published in
2008
Volume: 78
   
Issue: 3
Abstract
A reactive flow, the gelation of sodium acrylate (SA), was carried out in a cuboidal cavity with the top surface undergoing sinusoidal periodic motion. The instantaneous two-dimensional planar velocity fields during gelation were obtained using particle image velocimetry. The experiments were carried out with different plate velocities and different amounts of accelerator (TEMED). The temporal and spatial variations of the velocity components were analyzed. The magnitude of the velocity components was found to decrease with the progress of reaction due to gel formation. The role of mixing on the reaction is understood from the amount of gel formed at different plate velocities. Gel formation patterns are explained in terms of the mixing characteristics of the periodic flow. The periodic variation of point velocities showed the presence of higher harmonics in the flow. © 2008 The American Physical Society.
About the journal
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
ISSN15393755
Open AccessNo
Concepts (24)
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    Cements
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    Coagulation
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    Colloids
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    Flow visualization
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    Gels
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    Mixing
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    Sodium
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    Two dimensional
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    Driven cavity
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    Gel formation
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    Higher harmonics
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    MIXING CHARACTERISTICS
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    Particle image velocimetry
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    PERIODIC FLOWS
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    Periodic motions
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    PERIODIC VARIATIONS
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    REACTIVE FLOWS
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    SODIUM ACRYLATE
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    Spatial variations
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    Temporal characteristics
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    Top surface
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    Velocity components
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    VELOCITY FIELDS
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    Gelation