Development of multi-phase and multi-physics modelling approaches for the cavity flushing after underground coal gasification (UCG) operations and for the potential CO2 storage

The main objectives of the proposed research is to develop fully coupled multiphysics models to provide the capability of addressing the issues that arise from the Underground Coal Gastification operation and subsequent CO2 storage. In particular, the proposed study will utilize the unique advantages of conduction heat transfer in a Multiphysics model to simulate the cavity cooling process under natural conditions (air flow) or cavity washing (liquid flow). Simulations of the cavity preparation before CO2 injection will also be carried out by the developed model.