Designing And Application On Simulation System Of Tides Model Based On Steering Computing

Tide numerical simulation is an effective approach to study the evolution of tide. At present, tide computation, providing precious data to support engineering problems in coastal and estuarine areas, has been widely used in the studies of tide and current in gulf strait, coastal and estuarine areas. However, the existing models are in a relatively isolated status as its always use post-processing methods of data analysis, researchers can not know timely the current computational status of the program and can not intervene during the computational process. The traditional tide simulation lacks of real-time-dynamic monitoring and interactive expressing of tide changing process as a result of fail to integrate effectively with tide monitoring technologies and GIS visualization technologies.Our need of real-time visualization has increase with the gradually increasing of the data quantity and scale of numerical computation. Using visualization tools, we can know current computation status at any time, analyze and process data of numerical computation timely, transmit researcher's judges and decisions to the process of computation, change parameter setting or computation methods to carry out studies and discoveries by handle computational process. These are of significant meaning for the numerical simulations which are complicated and need long time to run.Computational steering, has become an effective approach to track and intervene computational process with its characterize of real-time visualization and dynamic intervene of running status and internal variables of numerical models. This research, firstly, analyzed the structure of the tide computation program, and then inserted the computational steering mechanism based on computational management component into traditional tide numerical computation program and visualization program separately. Finally, real-time status communication and data interaction of computation program and visualization program was accomplished by using the technology of memory sharing.In this paper, we introduce computational steering technology to tide numerical simulation. We take Wenzhou bay as a research trial area to put forward a solution of real-time monitoring, interactive expression and model verification during tide numerical computation. This has been realized by discussing and analyzing tide simulation methods and computational steering technology, combining advantages of GIS data management and visualization, specifically with the character of hydrodynamic numerical computation and the support by mixed-language programming technology. Tide dynamic interactive simulation platform based on GIS has been constructed initially while experiment of tide numerical simulation has also been verified, so real-time, quasi-real-time dynamic interactive visualization of numerical computational process is realized. Tide dynamic interactive simulation platform based on GIS has been constructed initially while experiment of tide numerical simulation has also been verified. Under this platform, researchers can adjust and modify parameters according to visualization of gradual data in the computation. So it is possible to manipulate the process of computation, and achieve the monitoring aim. Meanwhile it helps to avoid time-wasting of computing time after time, thereby enhancing the efficiency of calculations. All those are enormously significant to complicated and time-consuming tide numerical simulation. The dynamic and interactive simulation platform achieved effective dynamic monitoring results on the complicated and time-consuming tide numerical simulation. It also extends comprehensive applications of GIS Geoscience Analysis in the numerical simulation field.