کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8069188 | 1521125 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of natural convection heat transfer in a volumetrically heated semicircular pool
ترجمه فارسی عنوان
مطالعه آزمایشی انتقال حرارت طبیعی در یک استخر نیمه هادی عمودی گرم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
SIGMA CP (Simulant Internal Gravitated Material Apparatus Circular Pool) tests were performed to study natural convection characterized by a high modified Rayleigh number (Raâ²) in a semicircular pool. The test apparatus had a 500Â mm diameter, 250Â mm height and 100Â mm width. Two thin cartridge heaters, which had a sheath diameter of 6Â mm and a length of 2000Â mm, were used to simulate internal heating in the pool. They were uniformly distributed in the semicircular pool to supply a maximum heating power of 3Â kW to the pool. The Raâ² was varied from 106 to 1011 based on the power input. The working fluid Prandtl number (Pr) ranged between 4 and 8 for water and was 0.7 for air. Particular attention was paid to the influence of Pr on the natural convection heat transfer in the pool. A number of relations between the Nusselt number (Nu) and Raâ² were determined for the boundary conditions in the semicircular pool. The boundary condition is that the upper and lower walls are cooled isothermally. The experimental results indicated that both the upward and downward natural convection heat transfer rates were affected by Pr. The Rayleigh numbers were determined up to 7Â ÃÂ 1011 from this test. The resultant engineering correlations can be applied to simulations of a spectrum of loss-of-coolant accidents to determine the reactor vessel failure time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 73, November 2014, Pages 432-440
Journal: Annals of Nuclear Energy - Volume 73, November 2014, Pages 432-440
نویسندگان
Jong Kuk Lee, Kune Y. Suh, Kun Jai Lee, Jong-Il Yun,