کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661861 1458172 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oscillatory nucleation in counter flows of vapor and droplets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Oscillatory nucleation in counter flows of vapor and droplets
چکیده انگلیسی
Oscillatory nucleation regime in counter flows of vapor and falling droplets is considered. Experiments with such system were made in a diffusion cloud chamber. Oscillation is the results of the feedback between vapor depletion due to condensation on droplets and the value of a supersaturation in nucleation zone. For different pressure of carrier gas (helium) and temperatures, experimental results are presented for dodecane vapor. The new mathematical model of oscillatory nucleation is developed. Three characteristic times defines the duration of the process: nucleation time, time of droplets growth and falling, and, time of diffusion restoration of vapor profile. Experimental data and calculate ones are in good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 49, Issues 13–14, July 2006, Pages 2044-2052
نویسندگان
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