.dTLat output modified!
Posted: Mon Mar 02, 2009 9:47 pm
Dear MICRESS users,
In versions later than the official MICRESS Release 5.4 (after 2008 Oct. 28) the characteristics of the .dTLat ASCII output have changed. There are essentially three modifications:
1.) The frequency of output:
Instead of writing one line at each output time as before, the .dTLat file is now written as often as the .TabL file (like also .TabT, .TabP, .TabTQ). The main reason for this change is to provide "more dense" tabular data, e.g. for the enthalpy, Cp and the heat conductivity, without the need of writing simultaneously an immense number of graphical outputs. Those tabular data can be conveniently used e.g. in the context of iterative temperature coupling with the 1D temperature field (1d_temp).
2.) Additional column:
Fraction solid is now also available in the .dTLat file. Note that .dTLat is only written if either latent heat is activated (lat_heat or lat_heat_3d) or the 1D-temperature field is used (1d_temp). Note also that the temperature which appears in the 2nd column is not the bottom temperature like in the other ASCII outputs, but the average temperature of the reference domain (see below)!
3.) Reference frame:
Data in the .dTLat output in most cases constitute averages over the total simulation domain. The only exception is if 1d_temp is used and the simulation domain is not quadratic. In this case, averaging over a large temperature interval (e.g. in simulation of directional solidification) would not make so much sense. The reference domain is then reduced to the range of z coordinates which cover the centre of the simulation domain and which has a height defined by the grid size of the 1D temperature field. This dependency on geometry is preliminary and may be changed in future.
Bernd
In versions later than the official MICRESS Release 5.4 (after 2008 Oct. 28) the characteristics of the .dTLat ASCII output have changed. There are essentially three modifications:
1.) The frequency of output:
Instead of writing one line at each output time as before, the .dTLat file is now written as often as the .TabL file (like also .TabT, .TabP, .TabTQ). The main reason for this change is to provide "more dense" tabular data, e.g. for the enthalpy, Cp and the heat conductivity, without the need of writing simultaneously an immense number of graphical outputs. Those tabular data can be conveniently used e.g. in the context of iterative temperature coupling with the 1D temperature field (1d_temp).
2.) Additional column:
Fraction solid is now also available in the .dTLat file. Note that .dTLat is only written if either latent heat is activated (lat_heat or lat_heat_3d) or the 1D-temperature field is used (1d_temp). Note also that the temperature which appears in the 2nd column is not the bottom temperature like in the other ASCII outputs, but the average temperature of the reference domain (see below)!
3.) Reference frame:
Data in the .dTLat output in most cases constitute averages over the total simulation domain. The only exception is if 1d_temp is used and the simulation domain is not quadratic. In this case, averaging over a large temperature interval (e.g. in simulation of directional solidification) would not make so much sense. The reference domain is then reduced to the range of z coordinates which cover the centre of the simulation domain and which has a height defined by the grid size of the 1D temperature field. This dependency on geometry is preliminary and may be changed in future.
Bernd