5 results about "Virtual water" patented technology

The application discloses an agricultural water quality and water quantity dual risk and cascade transmission evaluation method, belongs to the technical field of water resource management, and aims at solving the problem that traditional methods only stay in water quantity depletion caused water resource pressure accounting and ignore the risk caused by substandard water quality; the application comprises the following steps: based on a farmland soil nitrogen budget and hydrodynamics coupling model, quantifying the pollution emission list of subdivided sources in the growth process of specific crops, simulating agricultural pollution dilution water consumption; using a crop water requirement model to calculate the irrigation water consumption of specific crops in the whole growth period; using a source and sink corrected physical flow trade model to analyze the virtual water transfer path hidden in each agricultural product trade link; integrating the production end and the consumption end results to realize high-precision grid agricultural water resource supply and demand imbalance risk evaluation and cascade effect analysis; and the cascade transmission effect of the application in evaluating the water resource risk provides strong support for reasonable allocation of agricultural water resources and improvement of nitrogen fertilizer utilization efficiency.

The invention discloses an urban flood simulation method based on virtual pool network and SWMM coupling, and the method comprises the steps: taking each sub catchment region of a research region as an independent water storage unit, and constructing a corresponding virtual pool; adjacent pools are connected through triangular weirs to form a virtual pool network reflecting the evolution of surface accumulated water; for a sub catchment area containing an inspection well, bidirectional water exchange between a virtual pool and a pipe network is established by using a transverse weir, so that overflow of the pipe network can be supplemented to the earth surface, and accumulated water on the earth surface can also be discharged into the pipe network. The surface runoff firstly enters the corresponding virtual pools and then is exchanged between the virtual pools or between the virtual pools and the pipe network through the weir structure, so that the whole process simulation of rainfall runoff-surface ponding-pipe network drainage is realized. According to the method, the precision, the efficiency and the realizability are coordinated and unified, the bottleneck that high precision and high efficiency are difficult to consider in an existing urban flood simulation technology is broken through, and the method has remarkable engineering practical value and wide popularization prospects.

The application discloses to belong to the technical field of water resources management, and particularly relates to a water resources carrying capacity prediction method based on a water resources supply and demand prediction model, which comprises the following steps: collecting economic, water supply and hydro-meteorological data of a research area; constructing an input-output model, combining with structural decomposition analysis to identify virtual water core influencing factors; constructing a water resources supply and demand deep learning prediction model, inputting influencing factor data under different future scenarios, and outputting water resources supply and demand prediction values; using the supply and demand prediction values and future social and economic data to calculate water resources supply and demand indexes and concentrated carrying indexes, and integrating the two indexes into a water resources carrying capacity index through an entropy weight method. The application realizes accurate prediction of regional water resources supply and demand and dynamic quantification of water resources carrying capacity under multiple social economy-climate scenarios, can accurately identify core driving factors of water resources carrying capacity, and provides technical support for sustainable allocation of water resources in arid areas and coordinated development of social economy and ecological environment.

The invention discloses a ripple rendering method and device for a virtual water body, equipment and a storage medium, and the method comprises the steps: obtaining virtual collision information on a virtual water body model, and generating a height field which is used for representing simulation mechanical information of the virtual collision information acting on the virtual water body model; obtaining a horizontal plane velocity field of the virtual water body model, and processing the horizontal plane velocity field and the height field according to a preset shallow water equation to obtain a water surface fluctuation height of the virtual water body model; and generating a ripple animation of the virtual water body according to the water surface fluctuation heights of the virtual water body model under multiple frames. According to the method, the speed field and the height field of the horizontal plane are processed through the shallow water equation, and the influence of the water flow velocity on the water surface fluctuation effect can be additionally shown, so that the ripple animation which is richer and closer to the real effect is generated, and the visual experience of a user in a game is improved.

The application discloses a rain flood resource water shortage-peak shaving double-target coordinated regulation method based on a distributed virtual reservoir, which comprises the following steps: constructing a virtual reservoir according to the administrative region division in a basin, wherein the reservoir capacity of the virtual reservoir is determined according to the area weight method based on the reservoir capacity in the basin; collecting monthly water demand data, rainfall data and natural runoff data in the basin, and determining the decision variable as the flow discharged under the regulation of the virtual reservoir; calculating the initial water quantity of the virtual reservoir, wherein the initial water quantity is determined based on the basin area, the initial precipitation and the natural runoff data, and the surface water coefficient in total water demand is calculated according to the water resources bulletin; constructing a multi-objective optimization model, solving the multi-objective optimization model by adopting an NSGA-II algorithm, generating a Pareto optimal solution set, and thus obtaining a monthly optimization regulation scheme of the virtual reservoir; and the application can be widely applied to rain flood resource optimization in the Zhuanlongwan basin and other arid and semi-arid regions.