کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7059079 | 1458085 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of radial temperature gradient on the stability of Taylor-Dean flow between two arbitrarily spaced concentric rotating cylinders
ترجمه فارسی عنوان
اثر گرادیان شعاعی دما بر ثبات جریان تیلور دین بین دو سیلندر چرخشی متخلخل متمرکز
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کلمات کلیدی
ثبات، گرادیان شعاعی، تیلور جریان دین، به طور موقت فاصله، سیلندر چرخشی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The effect of a radial temperature gradient on the stability of Taylor-Dean flow of an incompressible viscous fluid between two arbitrarily spaced concentric rotating circular cylinders driven by a constant azimuthal pressure gradient is studied. Here the ratio of representative pumping and rotation velocities β is varied from â6.1613 to 1.00 and both positive and negative values of the temperature gradient parameter N are considered, where N depends on the temperature differences T2 â T1 between the outer and inner cylinders. The linearized stability equations form an eigenvalue problem which is solved by using a classical Runge-Kutta scheme combined with a shooting technique, termed unit disturbance method. It is found that as the gap width between the cylinders increases, the critical Taylor number progressively increases for given values of β and N. It is also found that for given values of η (the ratio of the radii of inner and outer cylinders) and β, the flow becomes more and more unstable with increase in N(>0). In the present work, emphasis is given on the point as to whether the two neutral stability curves cross at some point for given value of N for which the flow is completely stable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 57, Issue 2, February 2013, Pages 662-670
Journal: International Journal of Heat and Mass Transfer - Volume 57, Issue 2, February 2013, Pages 662-670
نویسندگان
Tapas Ray Mahapatra, Samir Kumar Nandy, Anadi Sankar Gupta,