Numerical Temperature Determination of Frozen Duct in Frozen Soil Formation Based on Ground Freezing - Boundary Temperature Control Analysis Based on Adjoint Variable and Finite Element Methods -

摘要

In this study, we focus on the Ground freezing that is one of the soil improvement method, and carry out the boundary temperature control analysis on frozen duct in frozen soil formation based on the adjoint variable and the finite element methods. The heat transfer equation is introduced to represent the temperature diffusion in soil, and the finite element method is applied to simulate the temperature distribution in the target domain. In addition, the adjoint variable method is employed to obtain the appropriate frozen duct temperature such that the temperature at the target point near the frozen duct is close to the target temperature, i.e., the freezing temperature.