کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
153069 456518 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variable-property effect on liquid flow and heat transfer in microchannels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Variable-property effect on liquid flow and heat transfer in microchannels
چکیده انگلیسی
Numerical investigation was conducted in an effort to verify the variable-property effect of thermally developing flow in microchannel cooling passages. Temperature-dependent viscosity and thermal conductivity of liquid water were taken into account in theoretical modeling. Two-dimensional simulation was performed for low Reynolds number flow in a 100 μm single channel subjected to localized heat flux and different inlet temperatures. The fundamental characteristics of flow and thermal re-development were carefully analyzed. The heat transfer enhancement was described by defining the peak value and location of relative Nusselt number distribution as ΔNu%max and Xmax. Strong non-linear interaction mechanism prevailed in the correlation of ΔNu%max and Xmax due to high heat flux condition and dramatic rise of liquid temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 141, Issues 1–3, 15 July 2008, Pages 346-353
نویسندگان
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