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AssigneeNanjing Hydraulic Research Institute
InventorsYan Xiang, Zhengyang Su, Hailiang Yang, Xin Yang, Chengdong Liu, Kai Zhang, Bo Dai, Yakun Wang, Siyu Chen, Ying Meng, Liushan Tang
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Disclosed is a particle algorithm-based method for underwater detection and operation positioning of a reservoir dam system. A water body is stimulated by adopting a smoothed particle hydrodynamics (SPH) method, the ROV is simulated by adopting a discrete element method (DEM) unit formed by a series of particles, an umbilical cable between the ROV and a water surface control unit are simulated by a spring unit, dynamic interaction among the ROV, water flow and the cable are calculated by combining the SPH method and the DEM, and real-time motion positions of the ROV and the cable in complex environments are calculated and obtained; and a relative position between the ROV and the surface control unit can be calculated through the real-time position of the cable, and the real-time underwater positioning of the ROV is realized in combination with an absolute coordinate position of the surface control unit.
A particle algorithm-based method for underwater detection and operation positioning of a reservoir dam system, wherein a water body is stimulated by adopting a smoothed particle hydrodynamics (SPH) method, a remote operated vehicle (ROV) is simulated by adopting a discrete element method (DEM) unit formed by a series of particles, an umbilical cable between the ROV and a water surface control unit are simulated by a spring unit, dynamic interaction among the ROV, water flow and the cable are calculated by combining the SPH method with the DEM, and real-time motion positions of the ROV and the cable in complex environments are calculated and obtained;
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