MAGMA2 SPH#63

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rennehan wants to merge 39 commits intoSWIFTSIM:masterfrom

rennehan:magma2_sph

Commits on Jul 25, 2025

First push for MAGMA2. Right now it is just a Gasoline2 clone.
rennehan
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Added and tested the calculation of the correction matrix. Added in MAGMA2_DEBUG_CHECKS to output the ill condition nature.
rennehan
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Commits on Jul 26, 2025

Now the correction matrix is used to compute the kernel gradients. The kernel gradients are used in the equations of motion symmetrically. The Sedov test runs for a while, but still eventually cras…
rennehan
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Rosswog 2020 has Ga and Gb using the same dx vector. That is important for the antisymmetry of the problem. Also compute dh/dt using the density of particle pi rather than summing over pj contribut…
rennehan
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Equations 19 and 20 from Rosswog are now stored in the particle structure. I moved all of the gradient relevant tensors and quantites into a new gradients struct in the particle.
rennehan
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Renamed some variables to be more clear about the matrices. Added more debugging for the auxiliary velocity gradient tensor. Fixed a couple of issues with the original Gasoline implementation in co…
rennehan
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The velocity Hessian is computed (a rank 3 tensor) for velocity reconstruction.
rennehan
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Commits on Jul 28, 2025

Commits on Jul 29, 2025

Commits on Jul 30, 2025

Commits on Jul 31, 2025

Commits on Aug 1, 2025

Commits on Aug 4, 2025

Cleaning up some of the convenience functions so that dot products return values. Cleaned up the viscosity so that it is in hydro.h and the ifdef statements do the selection there instead of direct…
rennehan
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Commits on Aug 14, 2025

Added a Balsara limiter and figured out all of the correct Hubble flow terms for artificial conductivity and viscosity. Must use a much lower condition number of matrices to get good results, or el…
rennehan
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Commits on Aug 18, 2025

Fixes to some of the symmetry issues and gradient estimation.
rennehan
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Commits on Aug 20, 2025

Added some extra compilation options to test getting cosmological simulations to work. New updates to the best parameters.
rennehan
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Commits on Aug 21, 2025

More changes to how viscosity and conductivity are done.
rennehan
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Commits on Aug 22, 2025

Commits on Aug 25, 2025

Clean up the signal speed calculation for time-stepping.
rennehan
committed