The Establishment Of The Underground Water Source Heat Pump THMC Coupling Model And Eevolution Regularity

Underground water source heat pump technology as a low temperature geothermal resources sustainable utilization technique, has been widely used in recent years, but due to the temperature field, seepage field, stress field of underground aquifer and the evolution of the field of law research is insufficient, lead to recharge mode, the design of the single well injection water, groundwater and unreasonable pumping and pouring system design is unreasonable, leading to the underground water source heat pump in use a lot of problems.Paper combined with the national natural science fund project "the underground water source heat pump system more physical field coupling mechanism and evolution research" (No.41202180), the temperature field of underground aquifer water source heat pump, the coupling of seepage field, stress field and the field characteristics are analyzed, THMC four fully coupling model is established.Using FLUENT finite element method (fem)-more than the physical field coupling modeling and analysis software for underground water source heat pump system in pumping irrigation on operation of well pattern, the change of the seepage flow velocity and temperature change of the temperature field simulation analysis was carried out on the four coupling change rule.Model are verified the research and simulation computation model is analysed and studied, the simulation results show that a great influence on temperature field change in the velocity of percolation, the impact on the stress field and the field is not very obvious;Temperature change of the temperature field of a great influence on seepage field, the influence of temperature on the stress field and the field is not very obvious.