固相增量法在土壤蓄冷与释冷过程数值模拟中的应用

Application of the solid phase increasing method in simulation of soil charge and discharge processes

在土壤蓄冷与释冷过程中,系统周期性地从土壤吸热和向土壤排热,盘管周围的土壤随之发生周期性的冻融变化。详细介绍了固相增量法模型并将它应用于模拟土壤蓄冷与释冷的相变过程,初步分析了土壤蓄冷、释冷的运行特性。运用该模型解决了土壤冻融相变过程中非线性迭代的振荡问题,加快了迭代收敛速度。

With the heat absorbing and releasing from or to the soil during the soil charge and discharge process, the phase change of soil freezing and thawing around the pipes occurs periodically. Presents the solid phase increasing method in detail and applies it to simulate the phase change process. Analyses the operation performance of soil charge and discharge. This method solves the problem of nonlinear iterative oscillation successfully and expedites the convergence velocity.