کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4993414 | 1458023 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical study of falling film flow on a horizontal rotating tube
ترجمه فارسی عنوان
مطالعه عددی جریان سقوط فیلم در یک لوله چرخش افقی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this paper, a CFD simulation of falling film on a horizontal rotating tube is illustrated. The objective of this simulation is to explore the influence of various parameters on this kind flow. The simulation results show that in a certain range, the offset angle of the liquid column increases with the increase of the rotational speed, which agrees well with the experimental values. Compared to a stationary tube, the liquid film thickness at the left side of the liquid column is thinner but the right gets larger when the tube is rotating counterclockwise. And the liquid film velocity at the left side of the liquid column is equivalent to the linear superposition of the velocity at the standstill and the rotational velocity denoted by Ï. Rotation has a great influence on the velocity distribution at the right side of liquid column. Increasing the rotational speed and the diameter, decreasing the inlet velocity and the inlet hole diameter will make the offset angle of the liquid film larger. The high temperature reduces the offset angle of the liquid column, and the gradient of the liquid column offset angle to temperature becomes smaller. When the temperature is above 65â¯Â°C, the effect of temperature on the offset angle of liquid column is negligible. When Ïâ¯=â¯200â¯rpm, the offset angle increases first and then decreases with the increase of the inlet height, but when Ïâ¯=â¯300â¯rpm, the offset angle increases with the increase of the inlet height.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 117, February 2018, Pages 465-473
Journal: International Journal of Heat and Mass Transfer - Volume 117, February 2018, Pages 465-473
نویسندگان
Shi Lin, Zheng Zhang, Xi Liu, Kunyu Zhuang, Xuelai Li,