کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
237203 465697 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parametric effects of superficial gas velocity and cluster internal voidage on the penetrating flow through clusters
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Parametric effects of superficial gas velocity and cluster internal voidage on the penetrating flow through clusters
چکیده انگلیسی

Gas–solid interaction does exist both outside and inside particle clusters in gas–solid two-phase flow, but the penetrating flow through clusters was generally neglected in most mathematical models of clusters. As regards to what extent the penetrating flow exists in gas–solid flow and how the penetrating flow affects gas–solid interaction, there are still no universally accepted viewpoint and quantitative characterization until now. By utilizing both CFD (Computational Fluid Dynamics) simulations and PIV (Particle Image Velocimetry) measurements, this article quantitatively investigates the gas and dilute gas–solid penetrating flows through different pseudo two-dimensional clusters in a two-dimensional gas–solid fluidized bed. The solid penetrating flow through clusters seldom occurs, but the gas penetrating flow increases exponentially with increasing internal voidage of clusters, which is however affected little by superficial gas velocity under the tested operating conditions. These results imply that the effect of the gas penetrating flow through clusters must be taken into consideration when investigating particle clustering behavior in gas–solid two-phase flow.

Variation of the measured ϕg with εcl.Figure optionsDownload as PowerPoint slideHighlights
► The solid penetrating flow through clusters seldom occurs.
► The gas penetrating flow increases exponentially with increasing cluster voidage.
► The gas penetrating flow changes little with superficial gas velocity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 224, July 2012, Pages 404–409
نویسندگان
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