The physical simulation software and digital twin technology play a very important role in building a digital twin platform for water resources, which provides the necessary support to realize digital mapping and intelligent simulation of water resources production and operation. In order to promote the coordinated and efficient operation of different types of water modeling and the intelligence of watershed and water project governance processes, this project will carry out the research and application of process architecture and core technologies for water 3D simulation. The results of this project will provide the theoretical basis and technical support for the development of digital twin technology in the field of water resources in China and contribute to the development of water resources in China

Li, Xingzhi

Zhong, Zhengyu

English

Electronics Science Technology and Application (E-Journal)

Volume 10 Issue 5-25-Research and Application of 3D Simulation Technology for WaterResources Digital Twin PlatformXingzhi Li, Zhengyu ZhongSichuan Digital Economy Industry Development Limited Liability Company, Yulin 537000, China.Abstract: The physical simulation software and digital twin technology play a very important role in building a digital twinplatform for water resources, which provides the necessary support to realize digital mapping and intelligent simulation ofwater resources production and operation. In order to promote the coordinated and efficient operation of different types ofwater modeling and the intelligence of watershed and water project governance processes, this project will carry out theresearch and application of process architecture and core technologies for water 3D simulation. The results of this projectwill provide the theoretical basis and technical support for the development of digital twin technology in the field of waterresources in China and contribute to the development of water resources in China.Keywords:Water Digital Twin Platform; 3D Simulation; Simulation Technology1. Project OverviewCurrently, the whole country is worried about the status quo of industrial software (such as EDA software for chipdesign) which is 30-40 years behind the international level, and everyone from the country to the people is looking forwardto break this deadlock. The developed analog and digital twin technologies and their related products are engineeringapplication software. A series of independent innovations have been formed in large-scale simulation algorithms, automaticdesign software with simulation and artificial intelligence technology, and process optimization technology with theintegration of simulation and big data, and a multi-disciplinary and multi-field multi-user platform of simulation and digitaltwin technology has been built on this basis. All technologies and products are domestically produced and independentlydeveloped, which can help change the dilemma of having to use foreign software for key and major product development, inline with the national policy of independent and controllable, domestic substitution. It has a broad application prospect inindustrial production, scientific research and equipment operation, etc. For example, our EMC simulation system can beused as a "virtual flow chip". However, our software market is currently dominated by foreign companies such as ANSYS,Altair, Dassault, etc., which account for a negligible percentage of the market. The current situation is worrisome. Thedigital twin technology is based on simulation, combining artificial intelligence, big data, Internet, virtual reality and othercutting-edge digital technologies, which will open up a whole new market for the application of simulation technology.2. The water digital twin 3D simulation overview2.1 The requirements of three-dimensional simulation of the visualizationmodel2.2 3D entity visualizationFirst, with basin-level simulation capabilities. Connected to the upper system, using watershed data, the real-timeconditions of the water bodies around the water conservancy project or even the entire watershed are visualized in largescenarios to meet the needs of applications such as flood control and water resources scheduling and utilization. Second, ithas the ability to seamlessly integrate the details of the presentation. The visualization model can not only reproduce thegrand and open river landscape, but also show some features of the equipment components, and all the elements at all levels-26-Electronics Science Technology and Applicationshould be able to be expressed in the same scene, that is, the project includes only one digital twin environment in whichvarious simulations and emulations are performed. On this basis, the multi-level real-time drawing technology is used toachieve a seamless integration of large scale watershed panorama and equipment detail drawing. Third, the ability torepresent water bodies with a sense of realism. On this basis, a multi-factor synergy-based watershed visualization modelingmethod is established to precisely regulate the flow velocity, water level, color, transparency and other characteristics of themain areas, so as to achieve a multi-factor synergy-based watershed visualization modeling purpose[1].2.3 Abstract information visualizationFor some abstract data, such as entity attributes and summary information, they should be visualized directly accordingto their data characteristics, such as points, lines, and surfaces, as well as dynamic effects, such as dynamic icons, such asdynamic flow field lines.2.4 Business scenario visualizationThe visualization simulation is combined with the actual business application scenarios. For example, in the safety ofthe reservoir, the monitoring information and the corresponding mathematical modeling methods are used to simulate thelandslide; in the reservoir operation process, the water quality prediction results of the reservoir operation process are used tosimulate the reservoir operation process; with the safety of the project as the goal, based on the safety analysis andcalculation of the dam body, the deformation of the dam body is simulated under various conditions, etc.2.6 The application of three-dimensional simulation technology needsWith the main line of scene digitization-intelligence-accuracy-scene precision, it provides real-time drawing andvisualization support for "four predictions" and other special functions, realizes multi-dimensional, multi-temporal andspatial scale high-precision digital maps of water conservancy projects, and achieves real-time interactive response, lowlatency stability and scene realism. At the macro level, it provides simulation support for basin weather, atmosphere, rainfalland other prediction information; at the meso level, it provides simulation support for water storage and flooding inreservoirs; at the micro level, it provides simulation support for the internal mechanism of dams and the operation ofhydroelectric facilities. For this reason, it needs to be improved according to the special needs of the "four precautions"business, according to different practical situations, such as: real-time process simulation for flood control, "scenario -countermeasure" simulation for the occurrence of emergencies, and weather simulation for enhancing the realism of thescenario. In 3D virtual simulation applications, 3D objects need to be drawn visually, application scenarios need to be drawnvisually and business data need to be drawn visually. In the process of drawing, each scene can be drawn accordingly, andeach scene can be drawn separately and dynamically. Business data visualization drawing is based on the 3D spatial gridmodel as the digital foundation, and the specific attributes of application scenes and business data as the basis for positioningand overlaying business data in a unified 3D space, so as to unfold the display of various attribute information and businessstate information of management objects in a multi-dimensional collection[2] .3. Water digital twin 3D simulation case studyThis project is intended to take Shenzhen's "public-clear water connection" as an example, connecting GongmingReservoir, Qinglingyi Reservoir and Dongshen Water Supply, using Dongjiang and Xijiang to jointly transfer water toenhance Shenzhen's emergency water supply, improve the level of water protection for Shenzhen residents and industries,meet the needs of Longgang District's "dual water sources", and provide conditions for it to provide emergency water supplyto Hong Kong. In the project implementation process, based on the digital twin simulation technology system of waterconservancy, the "Gongqing Survey and Design Information System" was built, and the GIS and BIM data throughout theproject life cycle were used as the core to develop data integration, light weighting and business applications to support thewhole project life cycle. In the planning stage, besides using the digital twin scenes as the base map for planning, the systemcan also overlay and analyze the land planning, roads and environmentally sensitive areas traversed by different proposalsbased on the spatial analysis function, and combine them with information such as engineering volume for proposalcomparison. In the design phase, BIM models of project design results can be quickly connected and overlaid and seamlesslyVolume 10 Issue 5-27-stitched with 3D data of real scenes in the surrounding areas to visualize the effect of the project before and after completion.During the construction process, the 3D geological model can be cut along the direction of the project line to visualize therock stability distribution, fracture zones, and the relationship with intersecting buildings, etc. It can also provide support forthe complex geological conditions involved in the project construction by providing functions such as componentinformation query and individual observation in the BIM model. In the watershed-scale water resources digital twin system,there is a large-scale water information access and invocation problem. Based on this, the distributed storage of data anddynamic access to services enables efficient, on-demand, on-demand requesting, loading, and releasing of data resources,maximizing the efficiency of data resource use without affecting simulation results, and providing the possibility oflarge-scale, high-quality digital twin applications. This project is intended to take the "Han River Digital Twin" system as theresearch object, and to provide powerful support for flood control and water supply in the Han River basin.4. ConclusionWater resources digitization, networking and intelligence are the keys to water resources digitization. In this paper, theauthor centers on the specific needs of water resources digital twin construction and develops a detailed design of the overallframework and technical route of the twin platform simulation and simulation, which will address a series of core technicalissues such as efficient data services and spatial analysis and simulation simulation for water resources, high fidelity datacloud rendering technology for water resources, and finally form a set of water resources digital twin simulation and Thecomplete chain of technical solutions for water resources simulation. Continuously improve the universality andcommonality of 3D virtual simulation technology in the field of intelligent water resources, and extend it to the digital twinof various water resources projects.References[1] Zhang Y. Exploration of the overall architecture design of digital twin Haihe [C]// China Dam Engineering Society.Intelligent construction and high quality development of reservoir dams. China Construction Industry Press, 2023:870-874.[2] Dai L., Li S., Liu G. B., et al. Research and development of a digital twin-based safety monitoring and managementplatform for water conservancy projects [C]// China Dam Engineering Society. Intelligent construction and high qualitydevelopment of reservoir dams. China Construction Industry Press, 2023:915-921.About Authors:1. Xingzhi Li, 1977~, Male, Deyang, Sichuan, Han, Itermediate Engineer, Master2. Zhengyu Zhong, 1973.4~, Male, Guangxi Yulin, Han, Senior Engineer, Master, Reliability Engineering“Supported by 2021 Sichuan Science and Technology Program.” (No.:2021YFG0045)

Research and Application of 3D Simulation Technology for Water Resources Digital Twin Platform

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Research and Application of 3D Simulation Technology for Water Resources Digital Twin Platform

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Electronics Science Technology and Application (E-Journal)