Use a conservative CFL estimate, then validate with short ramp runs. Document dt choices per physics domain.
Tutorials
Time Step Sanity Checks
A quick workflow for evaluating dt before expensive runs.
Related posts
FSI Basics: From Interfaces to Data Transfer
Foundation steps for a reliable fluid-structure coupling.
Simulation Smells: Early Warning Signals
Small cues that suggest a model is headed for instability.
NaN Debugging in Coupled Solvers
Track the first invalid state before it propagates.