کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4992593 1457388 2017 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation on the propagation characteristics of pressure oscillation in direct contact condensation with low mass flux steam jet
ترجمه فارسی عنوان
بررسی تجربی در مورد ویژگی های انتشار نوسانات فشار در تراکم تماس مستقیم با جت بخار جوی کم جرم
کلمات کلیدی
نوسان فشار، جت بخار، انتشار تراکم جریان کم جرم،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The propagation characteristics of pressure oscillation in direct contact condensation with low mass flux steam jet have been investigated experimentally. Steam is injected into subcooled water at one atmosphere pressure with steam mass flux and water temperature range of 186-272 kg/(m2 s) and 293-343 K. The pressure oscillation propagates in the form of wave with stable dominant frequency, however the wave intensity attenuates with the increasing distance from the oscillation source. The root mean square of pressure wave prms attenuates rapidly with the increasing dimensionless radial distance from the nozzle exit. At about dimensionless radial distance R = 100, the prms is attenuated by about 90%. Although the dominant frequency of the pressure oscillation is constant during the propagation, after R = 100, there will be not enough energy for the pressure oscillation to resonate with relevant equipment. A correlation equation to calculate the root mean square of pressure oscillation along the radial distance is given. The prediction errors are within ±30% compared with the experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 88, November 2017, Pages 400-408
نویسندگان
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