Anti-Aerated Water Facilities Energy Dissipati On Characteristics Of Experimental Research And Analysis Of Scale Effect

With the vigorous development of hydropower, and many new buildings have a large discharge of "high head, large discharge, narrow valley" and other features, high-speed hydraulics problems have become increasingly prominent. These high dam project in the discharge flow velocity in the 40 m / s or so higher. Such a large water flow will have some special flow phenomena, such as aeration and erosion, atomized, especially aerated generated by the bubble, and works to bring great harm.To address this problem, we designed a special kind of energy dissipation facilities, anti-aerated energy dissipator, from the perspective of aeration to prevent, eliminate high-speed water discharged by the energy, and then also reduce the bubble. In order to better inspection of the facilities defoaming effects, the paper devoted to the 1:10 and 1:20 under two different scale hydraulic model test.The two models in the water level, flow, pressure distribution, flow, hydraulic characteristics such as aeration test observation, coupled with the flow coefficient and the rate of energy dissipation, we have obtained a great deal of data, it is also on the reduction of the model Size of the problem. This passed the test of the two models, we have not only tested and compared the energy dissipation of energy dissipation facilities and defaming effects, but also analyzed the effects of reduced scale of the impact test results. The main contents include:1) Looking up more literature, understand the dissipation mode and good or bad of the traditional and new type dissipation. search the dissipation further.2) introduced a reduced scale of the study, analyze the causes and effects of the reduced scale.3) This paper studies the problem, the view of the relevant model of experimental research and practical engineering analysis has some reference value.