کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7059530 | 1458088 | 2012 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A Lagrangian approach for modelling electro-kinetic mass transfer in microchannels
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
The computational modelling of multiphysics mass transfer in a microchannel is a challenging endeavour. This article has proposed and validated a Lagrangian methodology for modelling coupled physics using near optimal computational efforts. This new development has been verified and compared with a reference Eulerian finite difference model. A heuristic theory for computational mass transfer phenomena has been studied. At high Peclet numbers when the reference Eulerian model fails, the Lagrangian model resolves electro-osmotic mass transfer, showing a good quantitative agreement with theoretical analysis. The Lagrangian model also helps to estimate necessary parameters so that an optimal electro-osmotic pumping can be designed in a microchannel. The computational efficiency of the Lagrangian model has been examined, showing that an increase of the Peclet number by a factor of 32 increases the global computational complexity by about a factor of 104 if the reference Eulerian model were used. This verifies the optimal performance of the Lagrangian model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 55, Issues 25â26, December 2012, Pages 7847-7857
Journal: International Journal of Heat and Mass Transfer - Volume 55, Issues 25â26, December 2012, Pages 7847-7857
نویسندگان
Jahrul M. Alam, Jared M. Penney,