[mesa-users] Enabling diffusion in Mesa-r8118

[Émile Jetzer]

I have been trying to do simulation of a neutron star based on `ns_h` from the standard test suite, with diffusion. However, I've found that setting `do_element_diffusion` to `.true.` in `controls` did not change the result I got. To make sure, I ran tests with no accretion, & the pgstar output was the same in the case with & the case without diffusion. Is there something I am missing? The full code is available at http://github.com/ejetzer/neutronstars2 .

I have done something similar successfully in a previous version of Mesa, but cannot catch what I might be missing this time. The old code is at http://github.com/ejetzer/neutronstars .

Thanks,
Émile Jetzer.
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