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Add YASS integrator #1988

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BenWibking wants to merge 2 commits into from
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Add YASS integrator #1988

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6112b45
improve BackwardEuler integrator
BenWibking Apr 27, 2026
4ac79a3
add YASS integrator (Khokhlov et al. 2012)
BenWibking Apr 27, 2026
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9 changes: 9 additions & 0 deletions integration/BackwardEuler/_parameters
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Expand Up @@ -8,3 +8,12 @@ tol real 1.e-10

# toggle single-step BackwardEuler integration and ignoring error tolerance
do_single_step int 0

# use YASS (single Newton iteration with Y^0 as initial guess)
use_yass int 0

# YASS step size control: maximum allowed relative change per step
yass_eps real 0.1

# YASS step size control: minimum concentration for error checking
yass_floor real 1.e-3
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