EXPERIMENTAL CONSIDERATION ON PREVENTION OF SALINE WEDGE INTRUSION IN RIVERS USING AN AIR CURTAIN

Autor:	Toshikazu Yamauchi, Masanori Nakai, Takehiro Shimizu, Masamitsu Arita
Rok vydání:	1999
Předmět:	business.product_category Buoyancy medicine.medical_treatment Organic Chemistry engineering.material Biochemistry Wedge (mechanical device) Intrusion Fresh water Bubble flow Fictitious force medicine engineering Geotechnical engineering business Saline Geology Convection cell
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 43:887-892
ISSN:	1884-9172 0916-7374
DOI:	10.2208/prohe.43.887
Popis:	Efficiency of a prevention method on saline wedge intrusion in rivers using an air curtain (a two-dimensional bubble flow) was experimentally investigated from a viewpoint of a flow mechanism. The behavior of saline wedges in the presence of an air curtain is governed by the three external forces: the buoyancy of an air curtain A, the intrusion force of a saline wedge B and the inertial force of a fresh water flow R. It was found that the flow behavior could be classified into three types both by A/B dominating the rising discharge of salt water due to an air curtain, and by A/R dominating the strength (circulation) of a convection cell induced by an air curtain in its upstream side. In addition, the efficiency of this method was evaluated using the newly introduced parameter α through the discussion on the appearance conditions of the three flow types.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::be487ac0810e8cefef804308fe93203c https://doi.org/10.2208/prohe.43.887 Zobrazit plný text záznamu