Resource

A multidimensional two-phase flow model for the total dissolved gas downstream of spillways

Resource Type
Industry Papers and Articles
Reference Title
A multidimensional two-phase flow model for the total dissolved gas downstream of spillways
Author/Presenter
Politano, Marcelo S.
Carrica, Pablo M.
Turan, Cagri
Weber, Larry
Organization/Agency
International Association for Hydraulic Research
International Association of Hydraulic Engineering and Research
International Association for Hydro-Environment Engineering and Research
Publisher Name
Taylor & Francis
Year
2007
Journal Title
Journal of Hydraulic Research
Journal Volume
45
Journal Issue
2
ISBN/ISSN
ISSN: 0022-1686
Abstract/Additional Information

Elevated levels of dissolved gas in the spillway stilling basin, which are responsible for gas bubble disease in fish, constitute an important negative environmental effect of dams. Bubbles, entrained when a plunging jet impacts the tailwater pool, plunge beneath the surface and transfer mass to the liquid, causing an increase in the total dissolved gas (TDG) concentration.