Thermal Option

The thermal option of FLAC2D incorporates both conduction and advection models. The conduction models allow simulation of transient heat conduction in materials, and the development of thermally induced displacements and stresses. The advection model takes the transport of heat by convection into account; it can simulate temperature-dependent fluid density and thermal advection in the fluid. This thermal option has several specific features:

  1. Four thermal material models are available: isotropic conduction, anisotropic conduction, isotropic conduction/advection, and the null thermal model.
  2. As in the standard version of FLAC2D, different zones may have different models and properties.
  3. Any of the mechanical models may be used with the thermal model.
  4. Temperature, flux, convective and adiabatic boundary conditions may be prescribed.
  5. Heat sources may be inserted into the material as either point sources or volume sources. These sources may decay exponentially with time
  6. Both explicit- and implicit-solution algorithms are available.
  7. The thermal option provides for one-way coupling to the mechanical stress and pore-pressure calculations through the thermal expansion coefficients.
  8. Temperatures can be accessed via FISH for users to define temperature-dependent properties.

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