کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
657003 | 1458054 | 2015 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A thermo-mechanical model for flows in superposed porous and fluid layers with interphasial heat and mass exchange
ترجمه فارسی عنوان
یک مدل حرارتی مکانیکی برای جریان در لایه متخلخل و مایع متخلخل با تبادل گرما و جرم بین فاز
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کلمات کلیدی
جریان رسانه متخلخل رسانه متخلخل رابط مایع خالص جوش حرارتی، رویکرد یک دامنه، عدم تعادل حرارتی، نظریه های پیوسته، فرمولاسیون تئوریک مخلوط،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
In this paper, we develop a thermo-mechanical model for flows in superposed porous and fluid layers with interphasial heat and mass exchange. This model is based on a mixture-theoretic formalism, according to which, the fluid and the solid phases are treated as two coexisting but open thermodynamic continua that interact with each other. As such, each phase is endowed with its own set of thermodynamic variables and conservation laws. In particular, each phase is assigned with its own temperature field, thereby allowing for thermal non-equilibrium between the two phases. Constitutive equations for all dissipative and relaxation phenomena occurring in both phases are derived by exploiting the constraints imposed by the entropy axiom when applied to the entire mixture. This model is valid for both compressible and incompressible flows. Herein we also derive its low-Mach number approximation, which is substantially simpler and, therefore, more convenient for flows where compressibility effects are negligible. The efficacy of the proposed model and the effect of thermal non-equilibrium between the two phases are examined via direct numerical simulations of natural convection in a horizontal channel consisting of a porous layer and a superposed pure-fluid domain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 88, September 2015, Pages 42-54
Journal: International Journal of Heat and Mass Transfer - Volume 88, September 2015, Pages 42-54
نویسندگان
M.V. Papalexandris, P.D. Antoniadis,