Fundamental Study on the Unsaturated Flow in the Smooth and Rough Walled Small Pipes

Autor:	Fusetsu Takagi, Tetsuya Sumi, Uichiro Matsubayashi, Toshinobu Takayanagi
Rok vydání:	1997
Předmět:	Materials science Turbulence Organic Chemistry Flux Laminar flow Mechanics Biochemistry Open-channel flow Laminar flow reactor Pipe flow Physics::Fluid Dynamics Hele-Shaw flow Flow (mathematics) Geotechnical engineering
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 41:19-24
ISSN:	1884-9172 0916-7374
Popis:	In recent studies, the importance of preferential flow in mountainous slope have become obvious. To model these phenomena, we should explain the saturated/unsaturated flow in large pores. As the first step to do it, in this paper, based on measurements of water content θ and water flux Q of unsaturated flow in smooth- and rough-walled pipes (8mm dia. and 6.8mm dia.), those phenomena was physically explained and modeled. In smooth pipes, the relation between θ and Q was devided into the three domains, laminar, turbulent and transmission flow. Laminar and turbulent flows were modeled physically. In rough pipes, laminar and turbulent flows appeared, and both were modeled. These flows were explained physically as elemental phenomena in preferential flow.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3aa8c91d458319418fc6093379824287 https://doi.org/10.2208/prohe.41.19 Zobrazit plný text záznamu