Problems with crusher models

[JacobSchmidt2000]

When testing some crusher functions and selection functions I have some problems with the Unit: Crusher PBTM. When choosing for Selection=Constant and Breakage =Binary the crushing process is displayed correctly by changing the PSD. However, if I change the selection, for example, Linear and the Breakage to Vogel, the PSD of the output flow and input flow does not change. I have tried to vary the parameters, but the problem remains. In some cases, the string "nan" is displayed instead of the values of the particle size distribution. The flowsheet is in the ZIP.file

Batch_modus.zip

[vasylskorych]

I believe, it happent mostly because of the values of the selection function, which are often close to 0 with default parameters, therefore, almost no material is selected for breakage. E.g., for linear function, the selection function for each particle is equal to its volume, meaning S is somewhat in the area between 1e-15 and 1e07.

[JacobSchmidt2000]

Thank you very much for your answer.

I have tried again to vary the parameter selection. I first left the breaking function on binary for the test series and changed the functions for the selection matrix.

For selection = constant, the following values were used: [S_scale=1; S1=2; dt_min=0; dt_max=2]. With these values, the individual mass fractions changed.

For the selection Selection = Linear, the parameter S1 is omitted. S_scale was set to the maximum value of 1 and the values for the "maximum time step for integration" varied from 0.01 to 1e+9. However, the mass fractions could not be changed. The same problem exists for the selection = Quadratic.

Likewise, when selecting Selection = Power, no change in the mass fractions can be seen, even if high values for S1 were selected.

For Selection = Exponential, a breaking process takes place again. A change in the mass fractions could be achieved with the initial values [S_scale=1; S1=2; dt_min=0; dt_max=2].

For the selection of King and Austin, no breaking process takes place no matter what values I put in.

I don't think the problem lies in the low values for the selection parameters, but I don't know the reason why only 2 of 7 breaking processes take place in my case. Do you also experience these problems or am I doing something wrong?

[vasylskorych]

I also have the same behavior, so I need to check the model substantially