The Experiment Research And 3D Numerical Simulation On Flow Structure Of Ship Lock

With the rapid development of local economy, Yanshao lock lockage cargo increased year by year, but at the same time lock approach channel cannot be good to meet the requirements of vessels berthing and operational. These factors have resulted in a large number of ships stranded in the waters of Entrance Lock and the lock has been running at full capacity 24 hours a day. This situation has seriously affected the channel unobstructed and safety of ship lock. Lock head of ship lock play a role of pivotal between lock exports and reach river navigation, its flow conditions directly affect the safety of the fleet lockage.In this study, based on the principle of gravity similarity, we completed the production of the model. then have measured the flow rate of the different sections of the approach channel and velocity distribution of the various working conditions by a variety of measurements.We have measured prototype conditions, navigation wall conditions and velocity distribution by lots of measuring instruments. Surface layer and the underlying condition of each minute flow rate of water flow conditions were obtained by the tracking of chemicals and plastics particulates. The result showed that the navigation arc wall can eliminate deposition under lock head at the outlet. However, as the flow cross-section was reduced, the kinetic energy of water and whirlpool reflux become increased. The addition of 1.0 m-deep stilling basin can reduce the speed of longitudinal and reflux, which shows that the stilling basin is effective to eliminate flow energy of entrance area.The three-dimensional numerical simulations of lock head of ship lock was conducted to simulate the prototype conditions, navigation conditions and stilling basin conditions with different deep. The results showed that owing to the addition of stilling basin, chamber downstream water depth increased, which decreased the velocity of flow. At the same time, as the addition of the depth and the length of the stilling basin, recirculation region become smaller.This study not only improves the conditions of lockage ship, alleviate the difficulties, including the security risks of ships lockage and the safe operation management of lock, but also provides the basis for transformation and management of the similar lock.