کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1706075 1012449 2009 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An analytical study of linear and nonlinear double diffusive convection in a fluid saturated anisotropic porous layer with Soret effect
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
An analytical study of linear and nonlinear double diffusive convection in a fluid saturated anisotropic porous layer with Soret effect
چکیده انگلیسی

The double diffusive convection in a horizontal anisotropic porous layer saturated with a Boussinesq fluid, which is heated and salted from below in the presence of Soret coefficient is studied analytically using both linear and nonlinear stability analyses. The normal mode technique is used in the linear stability analysis while a weak nonlinear analysis based on a minimal representation of double Fourier series method is used in the nonlinear analysis. The generalized Darcy model including the time derivative term is employed for the momentum equation. The critical Rayleigh number, wavenumber for stationary and oscillatory modes and frequency of oscillations are obtained analytically using linear theory. The effect of anisotropy parameters, solute Rayleigh number, Soret parameter and Lewis number on the stationary, oscillatory, finite amplitude convection and heat and mass transfer are shown graphically.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Mathematical Modelling - Volume 33, Issue 9, September 2009, Pages 3617–3635
نویسندگان
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