کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7052698 1457425 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phenomena of a drop impact on a restricted liquid surface
ترجمه فارسی عنوان
پدیده ای از افت در یک سطح مایع محدود شده است
کلمات کلیدی
قطره، امواج بازتاب شده، دیوار اطراف گزاف گویی، گرفتگی حباب،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The behavior of drops impacting on a gas-liquid interface restricted by surrounding walls is studied using a high-speed video camera. The droplet diameter used in this experiment was 2.64 mm with impact Weber number of between 5 and 630. The highly purified water held by glass tubes of various inner diameters (6 mm, 8 mm, 12 mm, 17 mm and 26 mm) is used as the restricted target liquid. A special phenomenon of bubble entrapment is observed in our experiments. It is found that the bubble formation is not only dependent on the impact velocity of the drop, but also the distance from the surrounding walls to impact point. Moreover, because of the restricted effect of surrounding walls, the critical velocity for the occurrence of canopy bubble decreases sharply with the reduction of the tube size. Decreasing the inner diameter of tube also makes the drop bounce higher than that on a broad liquid surface with the same Weber number.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 51, November 2013, Pages 332-341
نویسندگان
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