7. UNUSUAL FEATURES OF THE PROGRAM
GEOTHER can be used to simulate the fluid-thermal interaction in rock that can be approximated by a porous media representation. It can simulate heat transport and the flow of compressed water, two-phase mixtures, and superheated steam in porous media over a temperature range of 10 to 300 degrees C. In addition, it can treat the conversion from single- to two-phase flow, and vice versa. It can be used for evaluation of a near repository spatial scale and a time scale of a
few years to thousands of years. The model can be used to investigate temperature and fluid pressure changes in response to thermal loading by waste materials.