| The Yinpan lock in Wujiang River is presently the highest single level lock in China. By analyzing the initial calculation of results of the designing and physical model test data, in the designing head, the next paragraph of its water-filled valves there is a big minus, especially in the rising ridge of the sudden-expansion body, the stress is very low, there is likely to result in side wall the cavitations erosion damage which has become one of the key issues that is urgently to solve.With dynamic mesh technology and VOF method, valve opening process has been simulated successfully by means of k-εturbulence model. The paper analyses flow pattern, flow velocity and pressure change along with time and space and dangerous region and time which take place cavitations erosion and flow induced vibration. With the flat valve and anti-arc valve separately applied to the Yinpan lock of the supply system water-filled valves paragraph, by numerical simulation results of detailed analysis, in the proposed anti-arc valves open 1min basic program up after the sudden-expansion of the valve body to carry out the eight corridor optimization, and to do a comparative analysis, In addition, anti-silver arc program 1min door closed, the valve flow characteristics paragraph must also study came to the conclusion that the following seven major conclusions:1. Through pre-processing software Gambit paragraph to build mixed-valve grid domain and the use of VOF model to deal with the existence of the free valve water wells are more effective.2. Based on the dynamic grid technology, combined with a spring similar to the methods and local grid reconstruction method with a larger-scale deformation of the moving boundary problem, do not reduce the efficiency at the same time, greatly improving the ability to mesh deformation and mesh quality, good effect.3. As opposed to a static simulation, dynamic simulation more accurately simulates the flow field structure and characteristics of the valve at variable condition and the headstock in the process of change.4. Numerical simulation results which has huge amounts of information, a detailed description of the valve above the mainstream with different valve opening of the attenuation process, the vortex patterns, the wall pressure distribution, flow turbulence intensity and turbulent dissipation rate distribution, a full reflection of the silver lock valve section of the distribution system hydraulic characteristics, contrast the physical model, the mathematical model has played an irreplaceable role. 5. To amend the extend of the top and the height of the dropping ridge and angle of inclination of the rising ridge and after the corridor inside the valve allows a marked increase in pressure, the use of 6min valve open when the program than recommend design or improve the pressure about 70kpa on the rising ridge, a better solution to the negative pressure problem, and the use of 1min quick way to open the pressure valve than 6min improve valve opened more obvious, it is recommended to open valve 1min.6. By comparing plane door programs, design, as well as the shape optimization corridor door of the designing after three sets of 16 programs working condition, select open the door at the anti-arc process, the valve at the end of fate, the sudden-expansion body roof upstream side of the site or the dropping ridge and department convex arc of the rising ridge which almost never have a minus pressure to optimize the program as a six eventually recommend the program.7. From the dynamic simulation results, the valves open the process and turn off process is not simple anti-process, there is very different of the sluice gate process in its flow field.
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