Time step simulation
There was quite a difference between the rise time of my Lugano ECAT simulation and the rise time measured by Paradigmnoia for his cylinder shaped Durapot cast.
To determine what is correct I decided to make a FEM model of the cylinder shaped Durapot cast and simulate the same transient as shown in Para's "Test 8 - 1300 L to 1410 L Waiting fot it".
A picture of a central cut and that of the modelled cast is shown in the following picture
Within a few degrees the start and end temperatures of the transient simulation where the same as in Para's measurement.
I used the same Durapot physical properties as a function of the temperature as for the Lugano ECAT simulation.
Also the horizental time scale was the same.
After the simulation the graph of the step simulation was combined with the graph provided by Para.
This is shown in the following figure
As can be seen the simulation of the cylinder shaped Durapot cast has the same settling behaviour time as what was measured by Para.
However the transient simulation of the Lugano ECAT showed a much shorter settling time.
The conclusion from both simulation is then that the measured time by Para is in agreement with the simulation, but that the transient settling time of the cylinder shaped Durapot cast is quite different from the simulated settling time of the Lugano ECAT.
Thus the transient behavior of the cylinder shaped Durapot cast is not representative for the transient behavior of the Lugano ECAT.