کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4452631 1620778 2012 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transport and deposition of ellipsoidal fibers in low Reynolds number flows
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
Transport and deposition of ellipsoidal fibers in low Reynolds number flows
چکیده انگلیسی

The motion of elongated, ellipsoidal fibers in low Reynolds number flows was studied using a computational modeling approach. The computer model resolved the coupled translational and rotational motion of fibers in laminar flows. The computational model was applied in a circular duct and the transport and deposition of ellipsoidal fibers with different sizes and aspect ratios were simulated. An experimental setup was also developed and deposition of glass fibers in a pipe flow in laminar flow regime was measured. A fiber classifier was used to generate fibers with different aspect ratios in controlled condition. The computational model predictions were compared with the experimental data and good agreement was observed. It was found that the flow shear rate, the fiber aspect ratio, and the particle-to-fluid density ratio significantly affect the transport and deposition of ellipsoidal fibers. It was also found that the computational model should account for the duct flow entrance region in order to provide physically realistic predictions. Attention was given to comparing the effectiveness of using equivalent spheres to approximate the elongated fibers. Several commonly used equivalent spheres were studied, and their suitability for characterizing motion of ellipsoidal fiber particles in the laminar flow was studied.


► Motions of ellipsoidal fibers in low Reynolds number flows were studied.
► The computer model resolved the coupled translational and rotational motion of fibers in the flow.
► Deposition of glass fibers in a pipe flow in laminar flow regime was measured.
► Flow shear rate, fiber aspect ratio, and density ratio affect the transport and deposition of ellipsoidal fibers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 45, March 2012, Pages 1–18
نویسندگان
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