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A Method for Determining Bottom Temperature Boundaries in Soil Hydrothermal Coupling Simulation

A soil temperature and thermal coupling technology, applied in instrument, calculation, electrical and digital data processing, etc., to reduce the amount of parameter settings, improve the calculation accuracy, and improve the calculation accuracy.

Active Publication Date: 2019-12-06
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for determining the bottom temperature boundary in soil hydrothermal coupling simulation, thereby solving the aforementioned problems existing in the prior art

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  • A Method for Determining Bottom Temperature Boundaries in Soil Hydrothermal Coupling Simulation

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0022] In the present invention, during the hydrothermal coupling simulation of the actual distributed hydrological model, the influence of air temperature and upper soil temperature changes on the calculation of the bottom boundary can be considered, which can effectively improve the simulation accuracy of the hydrothermal coupling simulation of the hydrological model, and solve the problem under fixed boundaries. There is a large gap between the simulation results.

[0023] Such as figure 1 As shown, the present invention provides a method for determining the bottom temperature boundary in soil...

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Abstract

The invention discloses a method for determining the temperature boundary of a bottom layer in soil hydrothermal coupling simulation, and relates to the technical field of water circulation in cold regions. According to the method, the influence of air temperature on the bottom soil temperature is considered, and after the soil temperature boundary changing along with time is adopted, the method can be suitable for simulating the soil temperature when the temperature of the bottom layer changes greatly along with time; The change of the bottom temperature of the calculation layer along with the temperature and the upper temperature is fully considered, and the calculation accuracy of hydrothermal coupling calculation is improved. Furthermore, soil temperature boundaries are set according to the calculation units; The method can be suitable for basin hydrological models of various scales, calculation boundaries can be specifically set according to soil temperatures of different basins of various regions, the problem that in an original hydrological model, changes of temperature boundaries of bottom layers in partitions are large can be effectively solved, and the calculation precision is improved while the parameter setting amount is reduced.

Description

technical field [0001] The invention relates to the technical field of water circulation in cold regions, in particular to a method for determining the bottom temperature boundary in soil hydrothermal coupling simulation. Background technique [0002] The water cycle in cold regions is mainly affected by glaciers and permafrost. The cold regions where glaciers and permafrost exist respond differently to climate change and human activities than non-cold regions. The distribution of different degrees affects the water cycle processes such as infiltration, evaporation, precipitation, runoff, and soil flow in cold regions. Soil freezing and river freezing are the biggest characteristics of the water cycle in cold regions that are different from those in non-cold regions. Understanding the water cycle process in cold regions is of great significance to the study of the evolution of permafrost and water resources. [0003] Numerical simulation is an important way to study the wat...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周祖昊刘扬李刘佳嘉朱熠明严子奇顾世祥陈刚周密谢波
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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