DESCRIPTION OF THE GEOTHERMAL SIMULATOR "GEOTHERM" - A FINITE DIFFERENCE MODEL OF THREE-DIMENSIONAL, SINGLE AND TWO-PHASE HEAT TRANSPORT IN A POROUS MEDIUM
The model GEOTHERM can simulate heat transport and the flow of compressed water, two-phase mixtures, and super-heated steam in porous media over a temperature range of 10 degrees to 300 degrees C. In addition, it can treat the conversion from single- or two-phase flow, and vice versa. The continuity equations for steam and water are reduced to two nonlinear partial differential equations in which the dependent variables are fluid pressure and enthalpy. These equations, describing three-dimensional effects, are approximated using finite-difference techniques and are solved using an iterative technique. The nonlinear coefficients are calculated using Newton-Raphson iteration, and an option is provided for using either upstream or midpoint weighting on the mobility terms.
Bibliographic Reference: EUR 9447 EN (1985) MF, 77 P., BFR 150, BLOW-UP COPY BFR 385, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989124092100 / Last updated on: 1987-01-01
Available languages: en