کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
239048 465791 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of electric field on the hydrodynamics of fluidized nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of electric field on the hydrodynamics of fluidized nanoparticles
چکیده انگلیسی

The effect of electric field on the hydrodynamics of nanoparticles was studied in a fluidized rectangular bed, with electrodes attached to two parallel walls. It was shown that the electric field of the order of 3 times the gravity markedly decreased the bed expansion and increased the solids volume fraction of nanoparticles fluidized by air. In these experiments, a light diode assembly was utilized to infer the local solids volume fractions within a rectangular bed of 10 nm silica particles. These experimental measurements yielded a two dimensional solids volume fraction distribution within the rectangular bed. The experimental results provided some new insights into the distribution of solids within the bed. The agglomerate diameters were computed using a momentum balance with the drag given by the Ergun equation and the empirical Richardson–Zaki method. Both methods yielded agglomerate diameters of the order of 100 μm and showed dependence on the strength of the electric field. The electric field decreased the granular temperature of the nanoparticles.

The application of electric field on the fluidized nanoparticles showed a markedly decrease in the bed expansion. The agglomerate diameters were computed using the Ergun equation and the Richardson–Zaki method. Both methods yielded agglomerate diameters ~ 100 μm and showed dependence on the strength of the electric field. The electric field decreased the granular temperature of the nanoparticles.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 183, Issue 3, 21 April 2008, Pages 441–453
نویسندگان
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