Re: Grain Orientation
Posted: Thu Mar 07, 2013 10:50 pm
Hi Raghav,
the connecting points, temperature gradient etc. are for directly specifying temperature boundary conditions.
But in case of 1d_temp, when using the Homoenthalpic Approach, the 1d temperature field solution is the temperature boundary condition for MICRESS, so you do not have to specify connecting points etc. This happens automatically if you specify 1d_temp at the top of the driving file.
Then you will need to specify the number of cells and grid size for the 1d temperature field (the total length is given by the casting size, the resolution should be typically a factor of 20-50 coarser as compared to the normal MICRESS grid.
Use of latent heat is default, and you have to specify a thermal conductivity for each phase (best is temperature-dependent from file if you find corresponding data) and an interval for updating enthalpy data (can be quite small without hurting too much, e.g. all 100 time steps).
Furthermore it is necessary to specify the position of the 2D/3D-MICRESS domain inside the 1d-temperature field corresponding to your sampling position.
Finally, you specify the boundary conditions and the thermophysical properties (from the .dTLat output) like mentioned above.
Bernd
the connecting points, temperature gradient etc. are for directly specifying temperature boundary conditions.
But in case of 1d_temp, when using the Homoenthalpic Approach, the 1d temperature field solution is the temperature boundary condition for MICRESS, so you do not have to specify connecting points etc. This happens automatically if you specify 1d_temp at the top of the driving file.
Then you will need to specify the number of cells and grid size for the 1d temperature field (the total length is given by the casting size, the resolution should be typically a factor of 20-50 coarser as compared to the normal MICRESS grid.
Use of latent heat is default, and you have to specify a thermal conductivity for each phase (best is temperature-dependent from file if you find corresponding data) and an interval for updating enthalpy data (can be quite small without hurting too much, e.g. all 100 time steps).
Furthermore it is necessary to specify the position of the 2D/3D-MICRESS domain inside the 1d-temperature field corresponding to your sampling position.
Finally, you specify the boundary conditions and the thermophysical properties (from the .dTLat output) like mentioned above.
Bernd