کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662446 1458186 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical nonequilibrium considerations in homogeneous bubble nucleation for unsteady-state boiling
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Mechanical nonequilibrium considerations in homogeneous bubble nucleation for unsteady-state boiling
چکیده انگلیسی

With thermal and mechanical nonequilbrium taken into consideration, the classical kinetic theory of boiling is modified to study unsteady-state homogeneous nucleation processes. Based on this newly developed model, the degree of superheat and the maximum nucleation rate corresponding to different rates of temperature rise in water are calculated and presented. For the first time, the initial nonequilibrium vapor pressure and the initial growth rate of bubble nuclei with different initial embryo sizes and different rates of temperature rise are accurately modeled. The resulting algorithm provides a method by which the details of bubble nucleation in a superheated liquid can be predicted, leading to a better understanding of the kinetics of boiling. Model validation, accuracy and application are also presented and discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issue 15, July 2005, Pages 3081–3096
نویسندگان
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