کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
659843 | 1458117 | 2010 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the accuracy of the interdiffusion measurements at low and moderate Rayleigh numbers. Some computational considerations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Using a typical shear cell arrangement, the degree of accuracy attained in the determination of the interdiffusion coefficients at low and moderate thermal and solutal Rayleigh numbers is analyzed here. It is concluded that, despite the marked directionality of these Fickian processes, thermal convective contamination is always negligible in real experiments but solutal convective contamination can be important even for moderate values of the solutal Rayleigh number. Nevertheless, in the range of values investigated and due to the above-mentioned directionality, the solutal convection could be minimized orienting the cell in such a way that its axis remains constantly aligned with the direction of the external disturbance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 19–20, September 2010, Pages 3708–3720
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 19–20, September 2010, Pages 3708–3720
نویسندگان
X. Ruiz, J. Pallares, F.X. Grau,