5 Discretized Governing Equations and Solution Procedure

The governing equations of Section 3 which are already in a weak form are discretized in space by means of the FEM and the discrete fracture model of Section 4.7 is implemented.

The following approximations are used for the field variables


si59_e  (4.45)

where Nα, α = u, p, T are the shape functions and u¯,p¯w,T¯si60_e the nodal values of the field variables.

Space discretization of Eqs. (4.14), (4.17), (4.18) and (4.22), incorporating the constitutive equations, results in the ...

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