Research On Key Technologies Of Tide Adaptive Simulation

Tidal current numerical simulation is an important technical method in Marine science research, which has become a coastal engineering, environmental engineering to understand the tide of the important and effective means. By numerical simulation can better guide the tide of coastal marine management, development and application. Tidal current numerical calculation is conducted on the discrete grid, so the use of appropriate grid computing for the success or failure of numerical calculation plays a vital role. Tidal current numerical model has large amount of calculation and time-consuming, so real-time monitoring and control of the calculation process are very important and necessary measures. Because of the large amount of tidal current numerical simulation data, how to fully and efficiently show the information contained in the data is a hotspot in the field of visualization research.This paper in view of the tidal current numerical simulation where the process needs to be improved, is proposed based on adaptive simulation of tide, and has carried on the related research. In the computational grid generation research, the terrain features adaptive mesh generation technology is introduced, which is achieved by extracting slope topography and coastal boundary curvature as a basis for the control of size. In tidal current numerical model research, this paper uses the hydrodynamic module in the tide of FVCOM model. And a kind of dynamic monitoring mechanism is designed to track the process of model calculation and control when needed. This paper researches the adaptive visualization techniques, refining and selection of data according to the data attributes and users, are using to reduce the irrelevant information, which improves the efficiency and enhances the visual presentation of data. Results are as follows:(1)By extracting terrain slope value as a basis for the control of size, the coastal boundary according to the discrete curvature, and with the aid of the background grid method and the AFT grid generation technique, automatically generate the accuracy requirements of the model variable density grid.(2)This paper designs a dynamic monitoring mechanism, and realizes the data in the process of tracking monitoring, calculation intervention and parameter adjustment, which improves the computational efficiency and automation degree of the model.(3)This paper realizes the underwater topography, tide, intertidal and other dynamic visualization, and also studies the flow field data fusion display, thin and LOD technology, which improves the rendering efficiency and enhances the expressive force of the data.Finally, based on Tidal current numerical model, adaptive visualization technology and the dynamic monitoring research, this paper realizes a simulation prototype system, and verified its feasibility and effectiveness.