کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9877527 | 1534078 | 2005 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct numerical simulation of electrohydrodynamic flow instabilities in microchannels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Fluids with gradients in electrical conductivity subjected to strong electric fields can undergo violent instability. In flows where molecular diffusion is slow, high conductivity gradients can be maintained beyond the initial instability and become a driver for chaotic flow. Despite the low Reynolds number in microchannel applications, molecular diffusion occurs slow enough that such flows are possible. This work investigates a class of electrically driven, conductivity gradient flow instabilities in microchannels that display turbulent characteristics at low Reynolds number. Flows far from the influence of solid boundaries and flows confined between parallel plates are considered. Electroosmotic flow at solid boundaries is also considered and found to have a dramatic impact on the flow. A variety of configurations and assumptions are studied using direct numerical simulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica D: Nonlinear Phenomena - Volume 211, Issues 1â2, 1 November 2005, Pages 151-167
Journal: Physica D: Nonlinear Phenomena - Volume 211, Issues 1â2, 1 November 2005, Pages 151-167
نویسندگان
Brian D. Storey,