کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10402901 | 892103 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study on bubble motion in a rectangular bubble column using high-speed video observations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Experimental study on bubble motion in a rectangular bubble column using high-speed video observations Experimental study on bubble motion in a rectangular bubble column using high-speed video observations](/preview/png/10402901.png)
چکیده انگلیسی
The lateral displacement of bubbles travelling over a certain vertical distance was transformed into a probability density distribution in order to measure the turbulent diffusion coefficient of the gaseous phase. The shape of the distributions obtained was found to fit well to the Gaussian standard distribution. The dispersion coefficients were observed to grow proportionally to the square root of the vertical distance. The diffusion coefficients were calculated from the proportionality factor and were compared with some correlations published in the literature. The experiments were performed for superficial gas velocities ranging from 1 to 6Â mm/s. The bubbles were generated either by a porous sparger or a set of capillaries placed at the bottom of the column. The measurements were taken at different heights between 1 and 1.2Â m where the bubble cloud was occupying the entire cross-section.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flow Measurement and Instrumentation - Volume 16, Issue 5, October 2005, Pages 277-287
Journal: Flow Measurement and Instrumentation - Volume 16, Issue 5, October 2005, Pages 277-287
نویسندگان
A. Zaruba, E. Krepper, H.-M. Prasser, B.N. Reddy Vanga,