کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7114192 1461092 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Capacitance wire mesh imaging of bubbly flows for offshore treatment applications
ترجمه فارسی عنوان
تصویربرداری از سیم مش ظرفیت جریانهای حبابی برای برنامه های کاربردی درمانی دریایی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی
The impact of ship motion on bubbly flow was emulated using a swell simulator to expose flow structure changes emerging in bubble columns relevant to offshore floating applications. Roll, roll+pitch, yaw, heave and sway were implemented at various frequencies and changes in bubbly flow resulting from the imposed motions were monitored for the first time by means of a dual capacitance wire mesh sensor to measure local gas holdup and velocity. Visualizations of the two-phase flow revealed that roll, roll+pitch, and high-frequency sway were the most impactful in terms of bubble zigzag and swirl, and bubble-clustering and segregation due to vessel dynamic inclinations. As a consequence of these motions, lateral migration of bubbles and their clustering enhanced liquid recirculation and local streamwise gas velocity. Compared to static vertical bubble column, bubbly flow pattern was barely altered by yaw and low-frequency sway except the heave displacements which tended to slowdown the bubble rise.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flow Measurement and Instrumentation - Volume 45, October 2015, Pages 298-307
نویسندگان
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