1403/01/09

احمدعلی ربیع نتاج درزی

مرتبه علمی: دانشیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده مهندسی و فناوری
نشانی: دانشگاه مازندران، دانشکده فناوری و مهندسی، گروه مکانیک
تلفن: 01135305130

مشخصات پژوهش

عنوان
Melting process in porous media around two hot cylinders: Numerical study using the lattice Boltzmann method
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Porous media; Cylinder; Convection; PCM; LBM
سال
2018
مجله Physica A: Statistical Mechanics and its Applications Editorial Board
شناسه DOI
پژوهشگران A.A.R Darzi ، Mahmoud Jourabian ، Davood Toghraie ، Omid ali Akbari

چکیده

Instantaneous melting of ice is accelerated inside a horizontal rectangular cavity with two vertically arranged cylinders using metallic porous matrix made of Ni-Steel alloys. The enthalpy-based lattice Boltzmann method (LBM) with a double distribution function (DDF) is employed at the representative elementary volume (REV) scale. Single-phase model is used and there is a local thermal equilibrium between porous structure and ice. Inserting metallic porous material into the base PCM results in the enhancement of the heat conduction and weakening of the natural convection flow. Concentric pattern of the solid–liquid interface persists in porous samples comparing to the pure PCM melting. Reducing porosity causes decrease of the full melting time and thermal storage capacity of the system. Thermal conductivity ratio has to be enlarged in porous samples with higher porosity from energy saving viewpoint