Modeling a Geothermal Field in Japan

Studied is a three-dimensional simulator of single-phase, hot-water flow which consists of fracture-type flow and recharge from the ground surface. Equations as applied to the simulator, and some assumptions and methods of solution are also described. These are applied to modeling of a geothermal field where exploration on geothermal activity is being conducted at present. As a result, it has been possible to infer some phenomena which appear to be related to hot-water flow in the earth´s crust.