Heat flux coupling simulation building method for dam downstream riparian zone based on Lu model

Abstract

The invention provides a heat flux coupling simulation building method for a dam downstream riparian zone based on Lu model. The method includes the steps that 1, a riparian saturated-unsaturated seepage field-temperature field full coupling model is built, the model building includes the establishment of a seepage field, the building of a saturated-unsaturated heat migration model, and the description of the relationship between a temperature field and a seepage field; 2, boundary conditions are set for the riparian saturated-unsaturated seepage field-temperature field full coupling model, the setting of the boundary conditions include the setting of boundary conditions for the seepage field and the setting of boundary conditions for the temperature field; 3, the riparian saturated-unsaturated seepage field-temperature field full coupling model is solved, the Lu model is used to describe the relationship between equivalent heat conduction coefficient and water content of soil body inthe solving process, and the variation rule of temperature with time is obtained in the seepage process. The problem that an influence mechanism of dam discharge low temperature water to the saturated-unsaturated heat flux coupling in the dam downstream riparian zone cannot be simulated accurately in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and relates to a construction method for coupling simulation of heat flow in a dam downstream bank zone based on a Lu model. Background technique [0002] Building dams and reservoirs on rivers is the most common engineering measure in the development and utilization of water resources. However, after the reservoir was built to store water, a huge water area was formed, which changed the water environment of the original natural river and formed a unique temperature field. The water diversion mainly for power generation of the reservoir is mainly taken from the hysteresis layer with low water temperature. The water temperature of the production and living water mainly using the tail water of power generation for agricultural irrigation, ecological water replenishment, and water intake in water plants is higher than that in most months of the year. The natural water temperat...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal-flow coupling simulation construction method for the dam downstream riparian zone based on the Lu model, which solves the inability to accurately simulate the impact of low-temperature water discharged from the dam on the saturation-unsaturated riparian zone in the prior art. The problem of the influence mechanism of heat-fluid coupling

Images