Iced reservoir water temperature-ice condition inversion and prediction method based on thermal coupling model

A technology of thermo-mechanical coupling and prediction method, applied in the fields of instrumentation, electrical digital data processing, computer-aided design, etc. question

Active Publication Date: 2020-11-10
SICHUAN UNIV
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Problems solved by technology

In this field, the existing studies on ice water in reservoirs mainly focus on empirical formulas and simplified mathematical models, and most of them only focus on the thermal generation and dissipation process of ice sheets. For example, the degree-day method only considers the thermal changes of ice at local locations , the vertical one-dimensional water-temperature-i...

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  • Iced reservoir water temperature-ice condition inversion and prediction method based on thermal coupling model
  • Iced reservoir water temperature-ice condition inversion and prediction method based on thermal coupling model
  • Iced reservoir water temperature-ice condition inversion and prediction method based on thermal coupling model

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Embodiment

[0080] In this example, the water temperature-ice regime inversion and prediction method of frozen reservoirs based on the thermal-mechanical coupling model provided by the present invention is used to obtain the water temperature distribution of the Northeast FM (Fengman) Reservoir from September 2, 2010 to May 31, 2011 conditions and the distribution of ice sheets.

[0081]Firstly, unequal-distance rectangular grids are used to divide the grids on the basis of the reservoir's large section, section spacing, horizontal grid spacing distribution, and vertical grid spacing distribution. The size of the rectangular grid can be set according to the characteristics of the reservoir.

[0082] In this embodiment, the FM reservoir is discretized into 532×52 rectangular grids, the vertical grid size (along the mainstream direction) is 20-800m, and the vertical grid size (along the water depth direction) is 0.3-3m. Geru Figure 5 shown. Each grid is a control unit, and the water tem...

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Abstract

The invention discloses an icing reservoir water temperature and ice condition inversion and prediction method based on a thermal coupling model, and the method comprises the steps: carrying out the processing of the thermal coupling model constructed by a hydrodynamic module, a water temperature module and an ice module, and considering the hydrodynamic water temperature and ice coupling effect;according to the method, the thermal evolution process of the water temperature and the ice condition of different types of frozen reservoirs in high and cold regions can be realized, so that the inversion and prediction of the distribution condition of the water temperature and the ice condition of the frozen reservoirs are achieved, and effective data support is provided for reservoir construction.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and relates to the inversion and prediction of the water temperature-ice condition of a frozen reservoir, in particular to a method for the inversion and prediction of the water temperature-ice condition of a frozen reservoir based on a thermal-mechanical coupling model. Background technique [0002] Ice is an important form of water resources, commonly found in cold or high latitude regions, and plays a pivotal role in the hydrological cycle. In the area north of 30°N in my country, there will be different degrees of ice phenomena every winter, accounting for about 70% of the country's land area. It is well known that the construction of reservoirs has significantly changed the hydraulic and hydrological characteristics of rivers. At the same time, these changes directly affect the thermal process of the reservoir and its upstream and downstream channels. It is worth notin...

Claims

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Application Information

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IPC IPC(8): G06F30/28G06F119/08G06F119/14G06F113/08
CPCG06F30/28G06F2113/08G06F2119/08G06F2119/14
Inventor 脱友才邓云李嘉杨颜菁杨小倩
Owner SICHUAN UNIV
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