オガワ　トシユキ   OGAWA Toshiyuki   小川　知之    所属   明治大学  総合数理学部    職種   専任教授
言語種別	日本語
発行・発表の年月	2015/01
形態種別	学術雑誌
査読	査読あり
標題	Effect of material anisotropy on the fingering instability in reverse smoldering combustion
執筆形態	共著(筆頭者以外)
掲載誌名	International Journal of Heat and Mass Transfer
掲載区分	国外
巻・号・頁	81,924-938頁
著者・共著者	Ekeoma Rowland Ijioma, Adrian Muntean, Toshiyuki Ogawa, Toshiyuki Ogawa
概要	It is well known from experiments that a sample of thin porous material burning against an oxidizing air under microgravity exhibits various finger-like char patterns. The patterns are classified into three distinct types depending on the oxidizer flow rate. (I) Sparse fingers; (II) tip-splitting fingers; (III) connected front. We presently extend our modeling strategy based on the homogenization approach, which has been applied for the case of isotropic porous media, to analyze the pattern behavior on anisotropic porous media. In order to understand the characteristic features of the patterns based on the influence of the local structure, we simply rely on fixed anisotropic two-dimensional geometries representative of the microstructure of interest. Thus, we illustrate numerically the consequence of the material anisotropy on the fingering patterns based on effective diffusion tensors calculated using the homogenization method and the mechanism of thermal-diffusion instability.
DOI	10.1016/j.ijheatmasstransfer.2014.11.021
ISSN	00179310
PermalinkURL	https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84913568868&origin=inward