کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662210 1458134 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quenching experiments inside 6.0 mm tube at reduced gravity
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Quenching experiments inside 6.0 mm tube at reduced gravity
چکیده انگلیسی

This paper addresses the experimental results of quenching in tubes under microgravity conditions. The objective of the experiment is to obtain quantitative data and observations of the rewetting phenomenon under low gravity level and compare results with the equivalent terrestrial gravity ones. Test tube is made of Pyrex with 6.0 mm in diameter. Tests are performed with FC-72, a fluorinert liquid, flowing inside a vertical test section and upward liquid flow. Measurements included outer wall temperatures along the flow channel, inlet and outlet fluid temperatures, pressure and mass flow-rate. The results show a significant decrease in the quenching velocity at reduced gravity, while the rewetting temperature does not look to be affected by gravity level. The observed flow patterns are inverted annular flow and bubbly flow. The analyses are completed with a detailed high speed video images at normal gravity. These tests reveal the influence of mass flow-rate on the structure of vapour–liquid configuration during the inverted annular flow.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 52, Issues 11–12, May 2009, Pages 2807–2814
نویسندگان
, , , ,