کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10391864 | 885038 | 2005 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Turbulent natural convection of air in a non-partitioned or partitioned cavity with differentially heated vertical and conducting horizontal walls
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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: Turbulent natural convection of air in a non-partitioned or partitioned cavity with differentially heated vertical and conducting horizontal walls Turbulent natural convection of air in a non-partitioned or partitioned cavity with differentially heated vertical and conducting horizontal walls](/preview/png/10391864.png)
چکیده انگلیسی
Turbulent natural convection of air in a non-partitioned or partitioned cavity with differentially heated vertical and conducting horizontal walls was studied experimentally. The dimensions of the cavity, which were 0.75 m high Ã 0.75 m wide Ã 1.5 m deep, resulted in two-dimensional flow in the mid-plane of the cavity. The hot and cold walls of the cavity were isothermal at 50 and 10 °C, respectively, giving a Rayleigh number of 1.58 Ã 109. Five partitions of a higher thermal conductivity material than that of the cavity were installed on the hot wall. The partitions were 150 mm long, 3 mm thick and covered the depth of the cavity. The local velocity and temperature were systematically measured at different locations in the cavity using a laser Doppler anemometer and a micro-diameter thermocouple. Both mean and fluctuation quantities are presented, i.e. Å«, uâ²rms, vÌ, vâ²rms, T, Tâ²rms, uâ²vâ², uâ²Tâ², and vâ²Tâ². The local and average Nusselt numbers, the wall shear stress as well as the turbulent kinetic energy are also presented. The experiments were conducted with very high accuracy and as such the results can establish experimental benchmark data and will be useful for validation of computational fluid dynamics codes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 29, Issue 2, January 2005, Pages 137-157
Journal: Experimental Thermal and Fluid Science - Volume 29, Issue 2, January 2005, Pages 137-157
نویسندگان
F. Ampofo,