کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
669052 | 1458808 | 2008 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conjugate thermosolutal convection and condensation of humid air in cavities
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Conjugate thermosolutal convection and condensation of humid air in cavities Conjugate thermosolutal convection and condensation of humid air in cavities](/preview/png/669052.png)
چکیده انگلیسی
Heat transfer by natural convection and surface condensation in two-dimensional enclosures in contact with a cold external ambient through a wall of finite thickness was studied numerically. Special attention was given on the modeling of the flow of a binary mixture consisting of humid air. Low-Mach number assumption was introduced in order to account for decreases in mixture mass and average pressure within the enclosure between the initial and steady states. The computations show that thermodynamic balances are satisfied within the accuracy of the numerical procedure. The heat and fluid flows with and without condensation are compared for various operating conditions. It is shown that vapor condensation increases the heat transfer rate at the cold wall at the early stage of the transient regime. The decrease in the average density of the mixture leads to significant variable's reductions at steady-state which, in turn, causes lower overall heat transfer rate than for dry air.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 47, Issue 12, December 2008, Pages 1571-1586
Journal: International Journal of Thermal Sciences - Volume 47, Issue 12, December 2008, Pages 1571-1586
نویسندگان
N. Laaroussi, G. Lauriat,