نوع مقاله : یادداشت فنی
نویسندگان
1 دانشکده مهندسی عمران - دانشگاه صنعتی امیرکبیر
2 دانشکدهی مهندسی عمران، دانشگاه صنعتی امیرکبیر
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Though various relationships for the non-linear analysis of flow through coarse porous media may be found in the literature, their applicability for engineering usage is limited. Difficulties in determining the grain mean hydraulic radius is a basic issue in this regard, due to the complexities in estimating the specific surface parameter involved for such calculations. After reviewing related theoretical bases, this article examines the reliability of a number of recent models proposed for determination of the specific surface, using actual data. Findings indicate that the Sabin-Hansen method is a more realistic means for such a purpose and, in spite of it's simplicity, the Bazargan model leads to least accurate results.
کلیدواژهها [English]
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