Experimental Studies on Effects of Discharge and Water Temperature on Aeration of Water at Weir

Abstract

There are many studies concerning aeration in free falls such as weirs and spillways. In this experimental study, an overall coefficient of oxygen transfer at a weir is measured in various conditions of discharge and water temperature. From this experiment, it is obtained that the overall coefficient of oxygen transfer is proportional to the discharge under the 2.5L/s and increases with an increase in the water temperature. As the overall coefficient of oxygen transfer depends on the water temperature, a temperature correction coefficient for the overall coefficient of oxygen transfer is investigated.