Add a low pass time filter to GK by Maxwell-Rosen · Pull Request #990 · gkeyllorg/gkeyll

Commits on Mar 27, 2026

Implement low-pass filter damping in gyrokinetic species model
Maxwell-Rosen
committed
04d0050
Add reset function for species damping in gyrokinetic app
Maxwell-Rosen
committed
b99a98c
Refactor damping functions for low-pass filter implementation in gyrokinetic app
Maxwell-Rosen
committed
41e4a27
Uncrustify format
Maxwell-Rosen
committed
a768b4f
Refactor damping functions in gk_species_damping.c for improved clarity and functionality
Maxwell-Rosen
committed
107f2cd
Refactor gk_species_damping_step_fbar_ssp_rk3 for improved clarity and functionality
Maxwell-Rosen
committed
3f3be48

Commits on Mar 28, 2026

Commits on Mar 29, 2026

Add write_rate flag to damping struct and implement rate diagnostics in low-pass filter
Maxwell-Rosen
committed
40a87ec

Commits on Apr 4, 2026

Commits on Apr 5, 2026

Commits on Apr 8, 2026

Clean up the reset of the fbar across phases. Valgrind clean
Maxwell-Rosen
committed
4b22dc1

Commits on May 26, 2026

Merge branch 'main' into low-pass-filter
Maxwell-Rosen
committed
f2599ba

Navigation Menu

Uh oh!

Add a low pass time filter to GK - #990

Add a low pass time filter to GK#990
Maxwell-Rosen wants to merge 28 commits into
mainfrom
low-pass-filter

Commits on Mar 27, 2026

Implement low-pass filter damping in gyrokinetic species model

Add reset function for species damping in gyrokinetic app

Refactor damping functions for low-pass filter implementation in gyrokinetic app

Uncrustify format

Refactor damping functions in gk_species_damping.c for improved clarity and functionality

Refactor gk_species_damping_step_fbar_ssp_rk3 for improved clarity and functionality

Commits on Mar 28, 2026

Implement low-pass filter damping functions and integrate into gyrokinetic update process

Uncrustify format

Add comments for damping helpers and low-pass filter functions

Update damping parameters to use rate_const instead of damping_const for clarity and consistency

Add low-pass filter fbar write functions and update damping struct for diagnostics

Remove unused parameter from gk_species_damping_reset function

Set evolve flag for low-pass filter damping to enable time evolution of fbar

Commits on Mar 29, 2026

Add write_rate flag to damping struct and implement rate diagnostics in low-pass filter

Commits on Apr 4, 2026

Merge branch 'main' into low-pass-filter

Change the fbar distribution (low passed) that we update to P0 to save a ton of memory and computation on the updates

There was some really crazy spacing issues that look like it might come from someone using Vim in the gyrokinetic_multib_update_ssp_rk3. I fixed the spacing issues. I also found an issue with the i…

Depricate damping with the loss cone multiplier. This will cause merge conflicts with another PR and nobody is using this feature, as far as I know

Bring back whether fbar is gkhyb basis or p0. I get a feeling that having fbar having gkhyb basis will help with rapid oscillations in gradients of f, driving negativity

Add the appropriate reset method to gyrokinetic.c

Make sure the timings are where they should be. Update the header to the function call for reset

Commits on Apr 5, 2026

Change the flag for wite init only dependent on evolve. This was a mistake on my part

Implement low-pass filter damping enhancements: preserve fbar state across resets and add configuration options

Push changes to the regression test too

Commits on Apr 8, 2026

Clean up the reset of the fbar across phases. Valgrind clean

Commits on May 26, 2026

Merge branch 'main' into low-pass-filter

Commits on Sep 6, 2026

Merge branch 'main' into low-pass-filter

› When simulations are restarted, the low-pass filter fbar should be restarted as well from the file. Implement this