کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
662932 1458182 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microfluidic exergy loss in a non-polarized thermomagnetic field
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Microfluidic exergy loss in a non-polarized thermomagnetic field
چکیده انگلیسی

In this article, exergy losses of fluid motion in a microchannel are investigated. Thermal, friction and electromagnetic irreversibilities contribute to the total rate of exergy destruction. Additional input power from the externally applied electric field is needed to overcome these irreversibilities and deliver specified rates of mass and heat flow through the microchannel. Different cases of steady-state heat transfer in a non-polarized electromagnetic field are considered. Predicted results of fluid velocity, exergy destruction and optimal Reynolds number are presented and compared successfully against past data and measurements involving exergy destruction. It is shown that exergy destruction increases with stronger magnetic fields and wider microchannels. Furthermore, the optimal Reynolds number (minimizing the rate of exergy destruction) increases at lower microchannel aspect ratios.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issues 19–20, September 2005, Pages 3945–3956
نویسندگان
, ,