lhy11009

Hi Guys I have put up this test for the Iddrissi flow law using the parameters in the test tests/visco_plastic_peierls_cutoff_test.prm I expand this to a diagram by setting a linear...

While debugging issue myself, I played with the value of Cutoff stresses for Peierls creep and changed it from 1e3 (left figure) to 1e4 (middle), and 1e5 (right). The changes...

So the takeaway is, with this set of parameters, the values from the Peierls creep are weaker than 1e18 when T > 1400, which would lead to a very weak...

Hi @bobmyhill Thanks for your answers. I read the highlighted part of the code again and I am more sure that I understand what it does. > We did think...

Hi @bobmyhill , first, thanks for your previous advice. After another look at the code, I have a question about implementation of the function ` PeierlsCreep::compute_exact_strain_rate_and_derivative (const double stress, const...

_The "Arrhenius cutoff" is calculated at a reference temperature (defined to be equal to E/R) and pressure (=0)._ Got it. That would answer my question for now. But the value...

Hi all Another curious situation is if we have phase transitions (e.g. upper and lower mantle) and we want to turn down the Peierls flow law for some of the...

> Do you mean that the ability to assign different values for each phase has not been implemented for the Peierls flow law Yes, I don't remember if we have...

@bobmyhill I have another thought into this issue: using the gradient of $\frac{dln(\dot{\epsilon})}{dln(\sigma)}$ instead of $\frac{d\dot{\epsilon}}{d\sigma}$. The idea is the logarithm values are in a safer range than the values...

@bobmyhill , Yeah, it makes to iterate the grain size that way. I'll add this change to my Hackathon todo list. My Idrissi flow law has been working well. I...