Thermal stratification reservoir three-field dynamic dissolved oxygen coupling model and construction method thereof

A technology of coupled models and construction methods, applied to hydraulic models, etc., can solve problems such as the evolution process of dissolved oxygen and the cause of formation are not completely clear

Active Publication Date: 2021-01-15
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Problems solved by technology

Due to the diversity and complexity of energy and mass systems in thermally stratified res

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  • Thermal stratification reservoir three-field dynamic dissolved oxygen coupling model and construction method thereof
  • Thermal stratification reservoir three-field dynamic dissolved oxygen coupling model and construction method thereof
  • Thermal stratification reservoir three-field dynamic dissolved oxygen coupling model and construction method thereof

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Embodiment Construction

[0038] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0039] refer to figure 1 , figure 1 A flow chart showing the "three fields" dynamic dissolved oxygen coupling model of thermal stratified reservoirs and its construction method; as figure 1 As shown, the method S includes steps S1 to S6.

[0040] In step S1, according to the mass conservation, momentum conservation and energy conservation of hydrodynamics, the basic governing equations of hydrodynamics including turbulent...

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Abstract

The invention discloses a thermal stratification reservoir three-field dynamic dissolved oxygen coupling model and a construction method thereof. The construction method comprises the following stepsof constructing a water power basic control equation, a water surface heat exchange equation and a water quality reaction equation of turbulence influence and density change, and constructing a three-field dynamic dissolved oxygen coupling model of a water power field, a temperature field and a concentration field; acquiring topographic data and historical monitoring data of a thermal stratification reservoir; according to the topographic data and the historical monitoring data, carrying out solving and calibration verification on the model through the three-field dynamic dissolved oxygen coupling model constructed based on an MIKE3 software platform, and then calculating spatial and temporal distribution of thermal stratification reservoir dissolved oxygen under the conditions of different water levels, scheduling operation modes and nitrate concentrations of the reservoir; and comparing the dissolved oxygen concentrations under different scenes, selecting the highest dissolved oxygensolubility value of a stagnant temperature layer, and taking the water level, the scheduling operation mode and the nitrate concentration corresponding to the highest dissolved oxygen solubility value as the dissolved oxygen adjustment strategy of the corresponding scene of the thermal stratification reservoir.

Description

technical field [0001] The invention relates to reservoir dissolved oxygen simulation technology, in particular to a "three-field" dynamic dissolved oxygen coupling model of a thermally stratified reservoir and a construction method thereof. Background technique [0002] Dissolved oxygen is an important parameter of water body health, plays a vital role in the biogeochemical cycle and the evolution of the structure and function of aquatic ecosystems, and is a sensitive indicator reflecting the changes in the physical and biogeochemical processes of aquatic ecosystems. With the large increase of pollution load in the watershed, the biomass of phytoplankton in deep-water lakes increases, and eutrophication occurs from time to time. During the thermal stratification period, the problem of water body hypoxia is serious, and water body hypoxia has become a serious global ecological environmental problem. [0003] The lack of oxygen in the water body will lead to the death of fish...

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Application Information

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IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 余晓李国强欧阳丽杜霞杨青瑞赵冲杜强诸葛亦斯石浩洋聂睿李双双梁晓旭陈一迪
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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