کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9691706 | 1458199 | 2005 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Condensation induced non-condensables accumulation in a non-vented vertical pipe
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
At the end of the year 2001 the radiolytic gases hydrogen and oxygen accumulated and exploded in non-vented steam pipelines at two nuclear power plants. The HELIO code has been developed for the numerical simulation and analyses of these incidents and as a support to the prescription of safety measures. This paper presents modelling and numerical approach, verification and results of the two-dimensional module of the HELIO code for the conditions of hydrogen-oxygen accumulation in a vertical pipe closed at the top. The results show a dynamics of hydrogen-oxygen accumulation, formation and propagation of the concentration front, gas mixture natural convection due to concentration and temperature imposed buoyancy forces and gas mixture-liquid film interface shear. The verification against plant data and for the common problem of steam condensation in the presence of air is presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issue 1, January 2005, Pages 83-103
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issue 1, January 2005, Pages 83-103
نویسندگان
Vladimir D. Stevanovic, Zoran V. Stosic, Uwe Stoll,