کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5011826 1462656 2017 59 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pore-scale study on reactive mixing of miscible solutions with viscous fingering in porous media
ترجمه فارسی عنوان
مطالعه مقیاس در مورد ترکیب مخلوط واکنش با راه حل های متناوب با انگشت چسبناک در رسانه متخلخل
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
In this paper, the reactive mixing process with viscous fingering of two miscible solutions is studied at pore scale using the lattice Boltzmann method. This single-phase flow obeys the Navier-Stokes equations with a concentration-dependent viscosity. The concentration transport is governed by the advection-diffusion-reaction equation, in which the interfacial reaction rate is described by a function of the concentration of a single reacting solute and admits two stable states separated by an unstable one. The reaction effects on mixing process with viscous fingering are explored in a single pore with different reaction rates, Péclet numbers and viscosity ratios. It is found that generally the reaction can suppress the mixing process significantly by sharping the solution interfaces. Such restriction is more obvious with increasing reaction rate, and even shares the similar fashion for different Péclet numbers and viscosity ratios. The reactive mixing process with viscous fingering is further investigated in artificial homogeneous and heterogeneous porous media with different parameters, and similar results are observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Fluids - Volume 155, 20 September 2017, Pages 146-160
نویسندگان
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