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GIS以其强大的空间数据存储、处理和分析功能已经广泛地应用于众多工程模型的建模和计算中。FV-COM模型对复杂地形岸界适应性好,同时又可以更好地保证质量的守恒性,是理想的近海岸水动力计算模型。以渤海的水动力计算为例,基于两者的耦合,提出了GIS支持下的近海岸水动力模拟计算前处理的空间数据管理、自动剖分网格和数据自动提取的方法,提高了建模、调试和前处理的效率。后处理使用了NetCDF和Geodatabase空间数据库格式存储多维计算结果数据,对渤海潮流和温盐的计算结果进行了验证和分析。计算结果表明,GIS耦合模型的使用能够方便模型数据的处理,大大提高模型的建模效率,清晰和生动地表达计算结果,反映了模拟研究区域的物理特性,对近海环境管理决策提供了数据和理论的决策支持。
GIS has been widely used in many engineering model modeling and calculation with its powerful spatial data storage, processing and analysis capabilities. The FV-COM model has good adaptability to complex terrain boundaries, and at the same time can better ensure the conservation of mass, which is an ideal model for calculating the hydrodynamic force near the coast. Taking the hydrodynamic calculation in the Bohai Sea as an example, based on the coupling between the two, a GIS-based approach to spatial data management of hydrodynamic simulations and pre-processing of coastal hydrodynamics, automatic meshing and automatic data extraction is proposed, which improves the modeling , Debug and pre-treatment efficiency. The post-processing uses the NetCDF and Geodatabase spatial database formats to store the multidimensional calculation results and validates and analyzes the calculation results of the tidal current and temperature-salt in the Bohai Sea. The results show that the use of GIS coupled model can facilitate the processing of model data, greatly improve the modeling efficiency of model, express the calculation results clearly and vividly, reflect the physical characteristics of simulated study area, provide data for decision-making of offshore environment management and Theoretical decision support.