کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6588614 1423238 2018 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation of air entrainment by vertical plunging liquid jet
ترجمه فارسی عنوان
بررسی تجربی جریان هوا توسط جت مایع عمودی غوطه ور
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
This paper presents experimental results and predictive model on the air entrainment flow rate due to the vertical plunging liquid jet. Three types of fluids with different physical properties were utilized as a working fluid for the experiment. Air entrainment flow rate was measured using soap meniscus method and various geometrical parameters including nozzle diameter (13-16 mm), fall height (105-210 mm), pool depth (30-180 mm), and angle of the bottom pool surface (0-75°) were changed to investigate the effects on air entrainment rate. Plunging tube was installed around the falling jet and impinging point. For the current experimental conditions, it was found that the air entrainment rate depends on the product of Weber number and Laplace length scale, and new predictive model on air entrainment ratio, defined as the entrained air flow rate divided by impinging jet flow rate, is proposed. The proposed model is capable of predicting air entrainment ratio at a mean absolute relative deviation of 15.9% at the given experimental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 181, 18 May 2018, Pages 251-263
نویسندگان
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