کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
659782 | 1458109 | 2011 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of area ratio on microjet array heat transfer
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The heat transfer performance of five submerged and confined microjet arrays using air and deionized water as the working fluids was investigated. Both inline and staggered array arrangements of jet with diameters of 54 and 112 μm were investigated, and the area ratio (total area of the jets divided by the surface area) was varied between 0.036 and 0.35. Reynolds numbers defined by the jet diameter were in the range of 180-5100 for air and 50-3500 for water. A heat flux of 1100 W/cm2 was obtained at a fluid inlet-to-surface temperature difference of less than 30 °C. The results were compared with established correlations, and no evidence was found to suggest that the behavior of submerged and confined jets at the microscale is fundamentally different than at the macroscale. Reynolds number, Prandtl number, and area ratio were found to significantly affect the heat transfer performance, and a curve fit was developed, which correlated 290 of the 295 data points within ±25% with an MAE of 11%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 54, Issues 9â10, April 2011, Pages 1782-1790
Journal: International Journal of Heat and Mass Transfer - Volume 54, Issues 9â10, April 2011, Pages 1782-1790
نویسندگان
Gregory J. Michna, Eric A. Browne, Yoav Peles, Michael K. Jensen,