کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053698 | 1458011 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on natural convection characteristics of oil/water emulsions inside a rectangular vessel with vertical heating/cooling walls
ترجمه فارسی عنوان
مطالعه ویژگی های کنجکاوی طبیعی امولسیون های نفتی / آب داخل یک حلقه مستطیلی با دیواره های عمودی گرم / خنک کننده
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کلمات کلیدی
امولسیون پودر طبیعی انتقال گرما، کشتی مستطیلی، طبقه بندی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Emulsions are mixtures of two immiscible liquids, which are important in various fields such as the food, cosmetics, and pharmaceutical industries. In industrial situations, natural convection may occur inside an emulsion owing to the temperature differences in the emulsion manufacturing and storage processes. Therefore, it is important to understand the natural convection characteristics of an emulsion for effective design of such systems. In the present study, oil-in-water (O/W) emulsions were prepared and the natural convection characteristics of the oil particles of the emulsions inside a rectangular vessel heated from one vertical wall and cooled from the opposite wall were investigated experimentally. Silicone oil was used as the dispersed phase of the O/W emulsion. The test samples were prepared with various oil particle sizes and oil volume fractions. We found that multiple convection layers formed inside the emulsion depending on the wall temperature difference, oil particle size, and oil volume fraction. Furthermore, the Nusselt number of an emulsion with a high oil volume fraction was higher than that of a single-phase fluid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 127, Part B, December 2018, Pages 616-628
Journal: International Journal of Heat and Mass Transfer - Volume 127, Part B, December 2018, Pages 616-628
نویسندگان
Takashi Morimoto, Toshiki Ikeda, Hiroyuki Kumano,