In terms of simulation deduction, multidisciplinary and large-scale mechanisms and simulation models are combined to form a "simulation mechanism metaverse" in the same digital world, constructing a virtual real interaction and bidirectional regulation mechanism. Key technologies include:
1) The simulation system is cloud native, based on cloud native supercomputing scheduling and solvers, which can significantly shorten simulation computation time and achieve real-time computing response for city level scenarios and entity scales of over one million;
2) Unified interface fusion computing, multiple mechanism models and simulation models can perform real-time fusion computing, forming a multi simulation joint service capability.
Under the combined influence of technology and demand, large-scale urban digital twins have made significant progress in application scenarios such as transportation management, disaster prevention and control, and dual carbon management. In terms of traffic management, based on high-precision 3D modeling and real-time rendering of urban road networks, water networks, rivers, vehicles, and other entities (reducing modeling costs by over 90% and shortening time from months to days), through joint simulation models of road traffic flow, urban waterlogging, autonomous driving, crowd movement, etc., twin drills and effect evaluations of comprehensive strategic plans for crowd evacuation guidance, traffic control strategies, weather conditions, public transportation supply, etc. at large-scale event sites can be achieved (achieving "1-minute activation plan" and "5-minute arrival at the scene" for emergency situations, and "1-hour evacuation" for large-scale events).
The market space for smart cities based on digital twins is very broad. According to IDC's prediction, the investment scale of smart cities will exceed 100 billion US dollars by 2025, with a compound annual growth rate of over 30% over 5 years. At present, the biggest bottleneck faced by urban digital twins is that the urban twins of large-scale object entity twins and business process twins at the city level have not yet been fully established. Urban digital twins will continue to evolve towards three-dimensional, unmanned, and global directions based on large-scale features. In the future, urban digital twins will serve as both a research and development testing environment for integrated unmanned systems (such as unmanned vehicles, drones, robots, etc.) in cities, as well as a support system for achieving global perception and scheduling.