What is the spike of energy at kMax

[JeffreyEarly]

• turning off de-aliasing simply moves the peak higher out.
• both SVV and HV seem to do their thing, but act too slowly
• looks like classic spectral blocking
• halving the domain size mostly eliminates the effect in one of Bailey's simulations, 512x256x257, 1000x1000x500

[JeffreyEarly]

Does this show up in hydrostatics?

[JeffreyEarly]

The issue was solved simply by setting a stricter tolerance during integration, model.setupIntegrator(absTolerance=1e-8);