کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
653629 | 885209 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Convection in a saturated Darcy porous medium with an exothermic chemical surface reaction and Soret effect
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
We consider a saturated Darcy porous medium with an exothermic chemical reaction on the lower boundary. The Dufour effect is neglected, however the influence of the Soret effect is studied. It is found that increasing the Soret coefficient may be either linearly stabilising or destabilising, depending on the boundary parameters and Lewis number. When stationary convection occurs increasing the Soret coefficient has a stabilising effect. A switch from stationary to oscillatory convection occurs at a lower Lewis number for a greater Soret coefficient. Linearised perturbation equations are given and numerical results for the critical Rayleigh number are presented graphically and then discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 39, Issue 9, November 2012, Pages 1331–1335
Journal: International Communications in Heat and Mass Transfer - Volume 39, Issue 9, November 2012, Pages 1331–1335
نویسندگان
Nicola L. Scott,