کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7058928 1458081 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of material properties on heating processes in two-layered porous media subjected to microwave energy
ترجمه فارسی عنوان
اثر خواص مواد در فرآیند های گرمایش در رسانه های متخلخل دو لایه تحت انرژی مایکروویو
کلمات کلیدی
گرمایش مایکروویو، متغیر تخلخل، پودر طبیعی رسانه متخلخل اشباع شده، خواص مواد، موجبر مستطیلی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Microwave heating of double-layer porous medium is numerically investigated using a proposed numerical model. A two-dimensional domain composed of two porous layers is considered. The two porous layers have different particle sizes, porosities, thermal and dielectric properties. The generalized non-Darcian model developed takes into account of the presence of a solid drag and the inertial effect. The transient Maxwell's equations are solved by using the finite difference time domain (FDTD) method to describe the electromagnetic field in the waveguide and in the media. The temperature profile and velocity field within the media are determined by solution of the momentum and energy equations given by the SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm. This study focuses on effects of diameter, porosity, position and types of particles that have different thermal and dielectric properties. The computed results agree well with the experimental results. While the particle size and porosity mainly affect fluid flow within porous media, the thermal and dielectric properties strongly influence heat transfer mechanism in each layer of porous media.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 61, June 2013, Pages 397-408
نویسندگان
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