Sobhani H, Azimi A. Numerical simulation of the non-Fourier heat conduction of the single-phased and dual-phased lagging in sand: local thermal equilibrium. Modares Mechanical Engineering 2017; 17 (3) :446-450
URL:
http://mme.modares.ac.ir/article-15-9-en.html
1- shahid Chamran University of Ahvaz
2- َAssistant Professor of Mechanical Engineering- Shahid Chamran University
Abstract: (4611 Views)
In recent years, various studies about non-Fourier heat transfer in various media including porous media have been performed that have provided contradictory results. In this article, the non-Fourier heat transfer in the porous media, especially the sand has been examined. In this regard, the numerical solution of a non-Fourier thermal conductivity with a pulsed heat flow boundary condition has been studied and this condition for the non-Fourier models has been discretized and applied in the non-Fourier manner. In this way, first, the governing equation for the DPL model has been solved with an explicit finite difference numerical method and its results have been studied and compared with the experimental data [1]. However, in the process of numerical solution of the DPL model, the grid study has been performed before anything. Also, the Single-Phased Lagging (SPL) model has been solved with an explicit numerical method and its results have been compared with the results of the DPL model and the experimental data. In this article, like the reference [1], it has been shown that the DPL model can model the non-Fourier heat transfer so much better that the Cattaneo’s model.
Article Type:
Research Note |
Subject:
Heat & Mass Transfer Received: 2017/01/2 | Accepted: 2017/01/25 | Published: 2017/02/27