IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic B: Water Engineering in Support of Built Environments : Prediction method of dissolved gas concentration downstream of high dams
Prediction method of dissolved gas concentration downstream of high dams
Author : CHENG Xiangju, CHEN Xuewei
The eco-environmental effects of great hydropower engineering have been long on concern at home and abroad. The dissolved gas concentration will be supersaturated downstream of spillways and cause fish gas bubble disease, eventually mortality. So it is very important to search an accurate and quick method to predict the dissolved gas concentration. The dissolved gas transfer efficiencies are calculated according to the measured data of spillway. The results shows that the transfer efficiency is a constant value for a given flow conditions, independently of the upstream concentration and the tailwater depth. So, this paper develops a method to predict the downstream dissolved gas concentration downstream of spillway for any given conditions based on the transfer efficiency, the upstream dissolved gas concentration and the tailwater depth. The results show that the present method is easy to be applied and suitable for different projects.
File Size : 137,468 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic B: Water Engineering in Support of Built Environments
Date Published : 09/07/2009
Download Now