کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661278 1458157 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Diffusion effects in the oscillation of vapor–gas bubbles in a sound field
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Diffusion effects in the oscillation of vapor–gas bubbles in a sound field
چکیده انگلیسی

The gas–vapor bubbles oscillating in the acoustic field are considered. The diffusion of gas and vapor components inside the bubble is taken into account. The analytical formula is obtained for the amplitude of the phase-transition rate. On the base of this formula the influence of the initial concentration of the gas was investigated. It is shown that the presence of relatively small amount of inert gas in the bubble can considerably decrease the phase-transition rate. This is related with the mutual diffusion of the components and so called “screen” effect of the inert gas at the bubble surface.This is because the vapor component loses its ability to penetrate rapidly through the shielding gas layer on the surface of the bubble.The effect of the kinetics of phase-transition rate (accommodation coefficient) on the intensity of phase-transition rate was also studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 50, Issues 17–18, August 2007, Pages 3556–3560
نویسندگان
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