نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
The stage-discharge curve of the standard WLH (Wide Low Head) fusegate was investigated in a laboratory flume before and after overturning. For this purpose, scale models of standard WLH fusegates were made in 16.7 cm height, two cycles, with five different inlet wells heights and located in the middle and end of the laboratory flume and they were tested before and after overturning. The results showed that the trend of changes in stage-discharge curve before and after the overturning of the fusegate has no significant relationship with the height of the well. By locating the studied structure in the middle of the flume, after overturning one fusegate unit, the water depth in the flume decreased about 30%, and by overturning both fusegates units, the water depth in the flume decreased about 50%. In the case where the fusegate is installed at the end of the flume, the process of changing the stage-discharge curve before and after overturning is similar to the case of installing it in the middle of the flume, but the water depth in the flume at a certain discharge is on average about 7 to 11% less than the position of the structure in the middle of the flume. In the case that the fusegate is made of iron and hinged, the amount of depth reduction after overturning is reduced (about 15%). Finally, relationships for estimating the discharge coefficient of the fusegate before overturning were presented, and the statistical parameters showed that these relationships have good accuracy.
کلیدواژهها English
